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1.7 cvs 1: /* 2: * 3: * (c) COPYRIGHT MIT and INRIA, 1996. 4: * Please first read the full copyright statement in file COPYRIGHT. 5: * 6: */ 1.9 cvs 7: 1.10 cvs 8: /* 9: * AHTURLTools.c: contains all the functions for testing, manipulating, 1.25 cvs 10: * and normalizing URLs. It also contains a local copy of the libWWW 11: * URL parsing functions. 1.10 cvs 12: * 13: * Authors: J. Kahan, I. Vatton 1.45 cvs 14: * R. Guetari (Stuff related to Windows). 1.10 cvs 15: * 16: */ 1.7 cvs 17: 1.15 cvs 18: #define THOT_EXPORT extern 1.3 cvs 19: #include "amaya.h" 20: 1.8 cvs 21: #include "init_f.h" 22: #include "AHTURLTools_f.h" 23: 1.24 cvs 24: #define MAX_PRINT_URL_LENGTH 50 1.29 cvs 25: typedef struct _HTURI { 1.67 cvs 26: STRING access; /* Now known as "scheme" */ 27: STRING host; 28: STRING absolute; 29: STRING relative; 30: STRING fragment; 1.29 cvs 31: } HTURI; 1.24 cvs 32: 1.28 cvs 33: 34: /*---------------------------------------------------------------------- 35: ConvertToLowerCase 36: Converts a string to lowercase. 37: ----------------------------------------------------------------------*/ 1.22 cvs 38: #ifdef __STDC__ 1.67 cvs 39: void ConvertToLowerCase (STRING string) 1.28 cvs 40: #else /* __STDC__ */ 1.38 cvs 41: void ConvertToLowerCase (string) 1.67 cvs 42: STRING string; 1.28 cvs 43: 44: #endif /* __STDC__ */ 45: { 46: int i; 47: 48: if (!string) 49: return; 50: 51: for (i = 0; string[i] != EOS; i++) 1.67 cvs 52: string[i] = utolower (string[i]); 1.28 cvs 53: } 1.22 cvs 54: 1.8 cvs 55: /*---------------------------------------------------------------------- 1.75 cvs 56: EscapeChar 57: writes the equivalent escape code of a char in a string 58: ----------------------------------------------------------------------*/ 59: #ifdef __STDC__ 60: void EscapeChar (STRING string, UCHAR_T c) 61: #else 62: void EscapeChar (string, c) 63: STRING string; 64: UCHAR_T c; 65: 66: #endif 67: { 68: c &= 0xFF; /* strange behavior under solaris? */ 69: usprintf (string, TEXT("%02x"), (unsigned int) c); 70: } 71: 72: /*---------------------------------------------------------------------- 73: EscapeURL 74: Takes a URL and escapes all protected chars into 75: %xx sequences. Also, removes any leading white spaces 76: Returns either NULL or a new buffer, which must be freed by the caller 77: ----------------------------------------------------------------------*/ 78: #ifdef __STDC__ 79: STRING EscapeURL (const STRING url) 80: #else 81: STRING EscapeURL (url) 82: STRING url; 83: #endif /* __STDC__ */ 84: { 85: STRING buffer; 86: int buffer_len; 87: int buffer_free_mem; 88: PCHAR_T ptr; 89: int new_chars; 90: void *status; 91: 92: if (url && *url) 93: { 1.76 cvs 94: buffer_free_mem = ustrlen (url) + 20; 95: buffer = TtaAllocString (buffer_free_mem + 1); 1.75 cvs 96: ptr = url; 97: buffer_len = 0; 98: 99: while (*ptr) 100: { 101: switch (*ptr) 102: { 103: /* put here below all the chars that need to 104: be escaped into %xx */ 105: case TEXT(0x27): /* & */ 106: case TEXT(0x20): /* space */ 107: new_chars = 3; 108: break; 109: 110: default: 111: new_chars = 1; 112: break; 113: } 114: 115: /* see if we need extra room in the buffer */ 116: if (new_chars > buffer_free_mem) 117: { 1.76 cvs 118: buffer_free_mem = 20; 1.75 cvs 119: status = TtaRealloc (buffer, sizeof (CHAR_T) 120: * (buffer_len + buffer_free_mem + 1)); 121: if (status) 122: buffer = (STRING) status; 123: else { 124: /* @@ maybe we should do some other behavior here, like 125: freeing the buffer and return a void thing */ 1.76 cvs 126: buffer[buffer_len] = EOS; 1.75 cvs 127: break; 128: } 129: } 130: /* escape the char */ 131: if (new_chars == 3) 132: { 133: buffer[buffer_len] = TEXT('%'); 134: EscapeChar (&buffer[buffer_len+1], *ptr); 135: } 136: else 137: buffer[buffer_len] = *ptr; 138: 139: /* update the status */ 140: buffer_len += new_chars; 141: buffer_free_mem -= new_chars; 142: /* examine the next char */ 143: ptr++; 144: } 145: buffer[buffer_len] = EOS; 146: } 1.76 cvs 147: else 148: buffer = NULL; 149: 1.75 cvs 150: return (buffer); 151: } 152: 153: 154: /*---------------------------------------------------------------------- 1.11 cvs 155: ExplodeURL 1.8 cvs 156: ----------------------------------------------------------------------*/ 157: #ifdef __STDC__ 158: void ExplodeURL (char *url, char **proto, char **host, char **dir, char **file) 159: #else 160: void ExplodeURL (url, proto, host, dir, file) 161: char *url; 162: char **proto; 163: char **host; 164: char **dir; 165: char **file; 166: 167: #endif 168: { 1.33 cvs 169: char *curr, *temp; 170: char used_sep; 1.32 cvs 171: 1.33 cvs 172: if (url && strchr (url, URL_SEP)) 173: used_sep = URL_SEP; 174: else 175: used_sep = DIR_SEP; 1.8 cvs 176: 177: if ((url == NULL) || (proto == NULL) || (host == NULL) || 178: (dir == NULL) || (file == NULL)) 179: return; 180: 181: /* initialize every pointer */ 182: *proto = *host = *dir = *file = NULL; 183: 184: /* skip any leading space */ 185: while ((*url == SPACE) || (*url == TAB)) 186: url++; 1.9 cvs 187: curr = url; 188: if (*curr == 0) 1.8 cvs 189: goto finished; 190: 191: /* go to the end of the URL */ 1.68 cvs 192: while ((*curr != EOS) && (*curr != SPACE) && (*curr != BSPACE) && 193: (*curr != __CR__) && (*curr != EOL)) 1.9 cvs 194: curr++; 1.8 cvs 195: 196: /* mark the end of the chain */ 1.9 cvs 197: *curr = EOS; 198: curr--; 199: if (curr <= url) 1.8 cvs 200: goto finished; 201: 202: /* search the next DIR_SEP indicating the beginning of the file name */ 203: do 1.11 cvs 204: curr--; 1.33 cvs 205: while ((curr >= url) && (*curr != used_sep)); 1.11 cvs 206: 1.9 cvs 207: if (curr < url) 1.8 cvs 208: goto finished; 1.9 cvs 209: *file = curr + 1; 1.8 cvs 210: 211: /* mark the end of the dir */ 1.9 cvs 212: *curr = EOS; 213: curr--; 214: if (curr < url) 1.8 cvs 215: goto finished; 216: 1.29 cvs 217: /* search for the DIR_STR indicating the host name start */ 1.33 cvs 218: while ((curr > url) && ((*curr != used_sep) || (*(curr + 1) != used_sep))) 1.9 cvs 219: curr--; 1.8 cvs 220: 221: /* if we found it, separate the host name from the directory */ 1.33 cvs 222: if ((*curr == DIR_SEP) && (*(curr + 1) == used_sep)) 1.8 cvs 223: { 1.9 cvs 224: *host = temp = curr + 2; 1.33 cvs 225: while ((*temp != 0) && (*temp != used_sep)) 1.8 cvs 226: temp++; 1.33 cvs 227: if (*temp == used_sep) 1.8 cvs 228: { 229: *temp = EOS; 230: *dir = temp + 1; 231: } 232: } 233: else 1.11 cvs 234: *dir = curr; 235: 1.9 cvs 236: if (curr <= url) 1.8 cvs 237: goto finished; 238: 239: /* mark the end of the proto */ 1.9 cvs 240: *curr = EOS; 241: curr--; 242: if (curr < url) 1.8 cvs 243: goto finished; 244: 1.67 cvs 245: if (*curr == TEXT(':')) 1.8 cvs 246: { 1.9 cvs 247: *curr = EOS; 248: curr--; 1.8 cvs 249: } 250: else 251: goto finished; 1.11 cvs 252: 1.9 cvs 253: if (curr < url) 1.8 cvs 254: goto finished; 1.9 cvs 255: while ((curr > url) && (isalpha (*curr))) 256: curr--; 257: *proto = curr; 1.8 cvs 258: 259: finished:; 260: 261: #ifdef AMAYA_DEBUG 262: fprintf (stderr, "ExplodeURL(%s)\n\t", url); 263: if (*proto) 264: fprintf (stderr, "proto : %s, ", *proto); 265: if (*host) 266: fprintf (stderr, "host : %s, ", *host); 267: if (*dir) 268: fprintf (stderr, "dir : %s, ", *dir); 269: if (*file) 270: fprintf (stderr, "file : %s ", *file); 271: fprintf (stderr, "\n"); 272: #endif 273: 274: } 1.3 cvs 275: 1.61 cvs 276: 277: /*---------------------------------------------------------------------- 278: ExtractSuffix extract suffix from document nane. 279: ----------------------------------------------------------------------*/ 280: #ifdef __STDC__ 281: void ExtractSuffix (STRING aName, STRING aSuffix) 282: #else 283: void ExtractSuffix (aName, aSuffix) 284: STRING aName; 285: STRING aSuffix; 286: 287: #endif 288: { 289: int lg, i; 290: STRING ptr, oldptr; 291: 292: if (!aSuffix || !aName) 293: /* bad suffix */ 294: return; 295: 296: aSuffix[0] = EOS; 297: lg = ustrlen (aName); 298: if (lg) 299: { 300: /* the name is not empty */ 301: oldptr = ptr = &aName[0]; 302: do 303: { 1.67 cvs 304: ptr = ustrrchr (oldptr, TEXT('.')); 1.61 cvs 305: if (ptr) 306: oldptr = &ptr[1]; 307: } 308: while (ptr); 309: 310: i = (int) (oldptr) - (int) (aName); /* name length */ 311: if (i > 1) 312: { 313: aName[i - 1] = EOS; 314: if (i != lg) 315: ustrcpy (aSuffix, oldptr); 316: } 317: } 318: } 319: 1.4 cvs 320: /*---------------------------------------------------------------------- 1.9 cvs 321: IsHTMLName 322: returns TRUE if path points to an HTML resource. 1.4 cvs 323: ----------------------------------------------------------------------*/ 1.3 cvs 324: #ifdef __STDC__ 1.67 cvs 325: ThotBool IsHTMLName (const STRING path) 1.3 cvs 326: #else /* __STDC__ */ 1.67 cvs 327: ThotBool IsHTMLName (path) 328: const STRING path; 1.3 cvs 329: #endif /* __STDC__ */ 330: { 1.67 cvs 331: CHAR_T temppath[MAX_LENGTH]; 332: CHAR_T suffix[MAX_LENGTH]; 333: CHAR_T nsuffix[MAX_LENGTH]; 1.5 cvs 334: int i; 335: 336: if (!path) 1.37 cvs 337: return (FALSE); 1.5 cvs 338: 1.67 cvs 339: ustrcpy (temppath, path); 1.5 cvs 340: ExtractSuffix (temppath, suffix); 341: 342: /* Normalize the suffix */ 343: i = 0; 1.39 cvs 344: while (suffix[i] != EOS && i < MAX_LENGTH -1) 1.13 cvs 345: { 1.67 cvs 346: nsuffix[i] = utolower (suffix[i]); 1.13 cvs 347: i++; 348: } 1.5 cvs 349: nsuffix[i] = EOS; 1.67 cvs 350: if (!ustrcmp (nsuffix, TEXT("html")) || 351: !ustrcmp (nsuffix, TEXT("htm")) || 352: !ustrcmp (nsuffix, TEXT("shtml")) || 353: !ustrcmp (nsuffix, TEXT("xht")) || 354: !ustrcmp (nsuffix, TEXT("xhtm")) || 355: !ustrcmp (nsuffix, TEXT("xhtml"))) 1.39 cvs 356: return (TRUE); 1.67 cvs 357: else if (!ustrcmp (nsuffix, TEXT("gz"))) 1.13 cvs 358: { 1.39 cvs 359: /* take into account compressed files */ 1.13 cvs 360: ExtractSuffix (temppath, suffix); 361: /* Normalize the suffix */ 362: i = 0; 1.39 cvs 363: while (suffix[i] != EOS && i < MAX_LENGTH -1) 1.13 cvs 364: { 1.25 cvs 365: nsuffix[i] = tolower (suffix[i]); 1.13 cvs 366: i++; 367: } 368: nsuffix[i] = EOS; 1.67 cvs 369: if (!ustrcmp (nsuffix, TEXT("html")) || 370: !ustrcmp (nsuffix, TEXT("htm")) || 371: !ustrcmp (nsuffix, TEXT("shtml")) || 372: !ustrcmp (nsuffix, TEXT("xht")) || 373: !ustrcmp (nsuffix, TEXT("xhtm")) || 374: !ustrcmp (nsuffix, TEXT("xhtml"))) 1.63 cvs 375: 1.39 cvs 376: return (TRUE); 377: else 1.13 cvs 378: return (FALSE); 379: } 380: else 1.39 cvs 381: return (FALSE); 1.3 cvs 382: } 383: 1.4 cvs 384: /*---------------------------------------------------------------------- 1.56 cvs 385: IsXMLName 386: returns TRUE if path points to an XML resource. 387: ----------------------------------------------------------------------*/ 388: #ifdef __STDC__ 1.67 cvs 389: ThotBool IsXMLName (const STRING path) 1.56 cvs 390: #else /* __STDC__ */ 1.67 cvs 391: ThotBool IsXMLName (path) 392: const STRING path; 1.56 cvs 393: #endif /* __STDC__ */ 394: { 1.67 cvs 395: CHAR_T temppath[MAX_LENGTH]; 396: CHAR_T suffix[MAX_LENGTH]; 1.56 cvs 397: 398: if (!path) 399: return (FALSE); 400: 1.67 cvs 401: ustrcpy (temppath, path); 1.56 cvs 402: ExtractSuffix (temppath, suffix); 403: 1.67 cvs 404: if (!ustrcasecmp (suffix, TEXT("xml")) || 405: !ustrcasecmp (suffix, TEXT("xht")) || 406: !ustrcmp (suffix, TEXT("xhtm")) || 407: !ustrcmp (suffix, TEXT("xhtml"))) 1.56 cvs 408: return (TRUE); 1.67 cvs 409: else if (!ustrcmp (suffix, TEXT("gz"))) 1.56 cvs 410: { 411: /* take into account compressed files */ 412: ExtractSuffix (temppath, suffix); 1.67 cvs 413: if (!ustrcasecmp (suffix, TEXT("xml")) || 414: !ustrcasecmp (suffix, TEXT("xht")) || 415: !ustrcmp (suffix, TEXT("xhtm")) || 416: !ustrcmp (suffix, TEXT("xhtml"))) 1.60 cvs 417: return (TRUE); 418: else 419: return (FALSE); 420: } 421: else 422: return (FALSE); 423: } 424: 425: /*---------------------------------------------------------------------- 426: IsCSSName 427: returns TRUE if path points to an XML resource. 428: ----------------------------------------------------------------------*/ 429: #ifdef __STDC__ 1.67 cvs 430: ThotBool IsCSSName (const STRING path) 1.60 cvs 431: #else /* __STDC__ */ 1.67 cvs 432: ThotBool IsCSSName (path) 433: const STRING path; 1.60 cvs 434: #endif /* __STDC__ */ 435: { 1.67 cvs 436: CHAR_T temppath[MAX_LENGTH]; 437: CHAR_T suffix[MAX_LENGTH]; 1.60 cvs 438: 439: if (!path) 440: return (FALSE); 441: 1.67 cvs 442: ustrcpy (temppath, path); 1.60 cvs 443: ExtractSuffix (temppath, suffix); 444: 1.67 cvs 445: if (!ustrcasecmp (suffix, TEXT("css"))) 1.60 cvs 446: return (TRUE); 1.67 cvs 447: else if (!ustrcmp (suffix, TEXT("gz"))) 1.60 cvs 448: { 449: /* take into account compressed files */ 450: ExtractSuffix (temppath, suffix); 1.67 cvs 451: if (!ustrcasecmp (suffix, TEXT("css"))) 1.56 cvs 452: return (TRUE); 453: else 454: return (FALSE); 455: } 456: else 457: return (FALSE); 458: } 459: 460: /*---------------------------------------------------------------------- 1.9 cvs 461: IsImageName 462: returns TRUE if path points to an image resource. 1.4 cvs 463: ----------------------------------------------------------------------*/ 1.3 cvs 464: #ifdef __STDC__ 1.67 cvs 465: ThotBool IsImageName (const STRING path) 1.3 cvs 466: #else /* __STDC__ */ 1.67 cvs 467: ThotBool IsImageName (path) 468: const STRING path; 1.3 cvs 469: #endif /* __STDC__ */ 470: { 1.67 cvs 471: CHAR_T temppath[MAX_LENGTH]; 472: CHAR_T suffix[MAX_LENGTH]; 473: CHAR_T nsuffix[MAX_LENGTH]; 1.5 cvs 474: int i; 475: 476: if (!path) 1.13 cvs 477: return (FALSE); 1.5 cvs 478: 1.67 cvs 479: ustrcpy (temppath, path); 1.5 cvs 480: ExtractSuffix (temppath, suffix); 481: 482: /* Normalize the suffix */ 483: i = 0; 1.39 cvs 484: while (suffix[i] != EOS && i < MAX_LENGTH -1) 1.13 cvs 485: { 1.67 cvs 486: nsuffix[i] = utolower (suffix[i]); 1.13 cvs 487: i++; 488: } 1.5 cvs 489: nsuffix[i] = EOS; 1.67 cvs 490: if ((!ustrcmp (nsuffix, TEXT("gif"))) || (!ustrcmp (nsuffix, TEXT("xbm"))) || 491: (!ustrcmp (nsuffix, TEXT("xpm"))) || (!ustrcmp (nsuffix, TEXT("jpg"))) || 492: (!ustrcmp (nsuffix, TEXT("png"))) || (!ustrcmp (nsuffix, TEXT("au")))) 1.39 cvs 493: return (TRUE); 494: return (FALSE); 1.3 cvs 495: } 496: 1.4 cvs 497: /*---------------------------------------------------------------------- 1.58 cvs 498: IsImageType 499: returns TRUE if type points to an image resource. 500: ----------------------------------------------------------------------*/ 501: #ifdef __STDC__ 1.67 cvs 502: ThotBool IsImageType (const STRING type) 1.58 cvs 503: #else /* __STDC__ */ 1.67 cvs 504: ThotBool IsImageType (type) 505: const STRING type; 1.58 cvs 506: #endif /* __STDC__ */ 507: { 1.67 cvs 508: CHAR_T temptype[MAX_LENGTH]; 1.58 cvs 509: int i; 510: 511: if (!type) 512: return (FALSE); 513: 1.67 cvs 514: ustrcpy (temptype, type); 1.58 cvs 515: /* Normalize the type */ 516: i = 0; 517: while (temptype[i] != EOS) 518: { 519: temptype[i] = tolower (temptype[i]); 520: i++; 521: } 1.67 cvs 522: if ((!ustrcmp (temptype, TEXT("gif"))) || (!ustrcmp (temptype, TEXT("x-xbitmap"))) || 523: (!ustrcmp (temptype, TEXT("x-xpixmap"))) || (!ustrcmp (temptype, TEXT("jpeg"))) || 524: (!ustrcmp (temptype, TEXT("png")))) 1.58 cvs 525: return (TRUE); 526: return (FALSE); 527: } 528: 529: /*---------------------------------------------------------------------- 1.9 cvs 530: IsTextName 1.4 cvs 531: ----------------------------------------------------------------------*/ 1.3 cvs 532: #ifdef __STDC__ 1.67 cvs 533: ThotBool IsTextName (const STRING path) 1.3 cvs 534: #else /* __STDC__ */ 1.67 cvs 535: ThotBool IsTextName (path) 536: const STRING path; 1.3 cvs 537: 538: #endif /* __STDC__ */ 539: { 1.67 cvs 540: CHAR_T temppath[MAX_LENGTH]; 541: CHAR_T suffix[MAX_LENGTH]; 542: CHAR_T nsuffix[MAX_LENGTH]; 1.5 cvs 543: int i; 544: 545: if (!path) 1.13 cvs 546: return (FALSE); 1.5 cvs 547: 1.67 cvs 548: ustrcpy (temppath, path); 1.5 cvs 549: ExtractSuffix (temppath, suffix); 550: 551: /* Normalize the suffix */ 552: i = 0; 1.39 cvs 553: while (suffix[i] != EOS && i < MAX_LENGTH -1) 1.5 cvs 554: { 1.25 cvs 555: nsuffix[i] = tolower (suffix[i]); 1.5 cvs 556: i++; 557: } 558: nsuffix[i] = EOS; 559: 1.67 cvs 560: if ((!ustrcmp (nsuffix, TEXT("txt"))) || (!ustrcmp (nsuffix, TEXT("dtd")))) 1.13 cvs 561: return (TRUE); 1.67 cvs 562: else if (!ustrcmp (nsuffix, TEXT("gz"))) 1.13 cvs 563: { 1.39 cvs 564: /* take into account compressed files */ 1.13 cvs 565: ExtractSuffix (temppath, suffix); 566: /* Normalize the suffix */ 567: i = 0; 1.39 cvs 568: while (suffix[i] != EOS && i < MAX_LENGTH -1) 1.13 cvs 569: { 1.25 cvs 570: nsuffix[i] = tolower (suffix[i]); 1.13 cvs 571: i++; 572: } 573: nsuffix[i] = EOS; 1.67 cvs 574: if ((!ustrcmp (nsuffix, TEXT("txt"))) || (!ustrcmp (nsuffix, TEXT("dtd")))) 1.13 cvs 575: return (TRUE); 576: else 577: return (FALSE); 578: } 579: else 580: return (FALSE); 1.3 cvs 581: } 582: 1.4 cvs 583: /*---------------------------------------------------------------------- 1.9 cvs 584: IsHTTPPath 585: returns TRUE if path is in fact an http URL. 1.4 cvs 586: ----------------------------------------------------------------------*/ 1.3 cvs 587: #ifdef __STDC__ 1.67 cvs 588: ThotBool IsHTTPPath (const STRING path) 1.3 cvs 589: #else /* __STDC__ */ 1.67 cvs 590: ThotBool IsHTTPPath (path) 591: const STRING path; 1.3 cvs 592: #endif /* __STDC__ */ 593: { 1.5 cvs 594: if (!path) 595: return FALSE; 1.3 cvs 596: 1.67 cvs 597: if ((!ustrncmp (path, TEXT("http:"), 5) != 0) 598: || !ustrncmp (path, TEXT("internal:"), 9)) 1.58 cvs 599: return TRUE; 600: return FALSE; 1.3 cvs 601: } 602: 1.4 cvs 603: /*---------------------------------------------------------------------- 1.9 cvs 604: IsWithParameters 605: returns TRUE if url has a concatenated query string. 1.4 cvs 606: ----------------------------------------------------------------------*/ 1.3 cvs 607: #ifdef __STDC__ 1.66 cvs 608: ThotBool IsWithParameters (const char *url) 1.3 cvs 609: #else /* __STDC__ */ 1.66 cvs 610: ThotBool IsWithParameters (url) 1.34 cvs 611: const char *url; 1.3 cvs 612: #endif /* __STDC__ */ 613: { 1.5 cvs 614: int i; 1.3 cvs 615: 1.9 cvs 616: if ((!url) || (url[0] == EOS)) 1.5 cvs 617: return FALSE; 1.3 cvs 618: 1.9 cvs 619: i = strlen (url) - 1; 620: while (i > 0 && url[i--] != '?') 1.5 cvs 621: if (i < 0) 622: return FALSE; 1.3 cvs 623: 1.5 cvs 624: /* There is a parameter */ 625: return TRUE; 1.3 cvs 626: } 627: 1.4 cvs 628: /*---------------------------------------------------------------------- 1.9 cvs 629: IsW3Path 630: returns TRUE if path is in fact a URL. 1.4 cvs 631: ----------------------------------------------------------------------*/ 1.3 cvs 632: #ifdef __STDC__ 1.67 cvs 633: ThotBool IsW3Path (const STRING path) 1.3 cvs 634: #else /* __STDC__ */ 1.67 cvs 635: ThotBool IsW3Path (path) 636: const STRING path; 1.3 cvs 637: #endif /* __STDC__ */ 638: { 1.72 cvs 639: if (ustrncmp (path, TEXT("http:"), 5) && ustrncmp (path, TEXT("ftp:"), 4) && 640: ustrncmp (path, TEXT("telnet:"), 7) && ustrncmp (path, TEXT("wais:"), 5) && 641: ustrncmp (path, TEXT("news:"), 5) && ustrncmp (path, TEXT("gopher:"), 7) && 642: ustrncmp (path, TEXT("mailto:"), 7) && ustrncmp (path, TEXT("archie:"), 7)) 643: return FALSE; 644: return TRUE; 1.3 cvs 645: } 646: 1.4 cvs 647: /*---------------------------------------------------------------------- 1.9 cvs 648: IsValidProtocol 649: returns true if the url protocol is supported by Amaya. 1.4 cvs 650: ----------------------------------------------------------------------*/ 1.3 cvs 651: #ifdef __STDC__ 1.67 cvs 652: ThotBool IsValidProtocol (const STRING url) 1.3 cvs 653: #else /* __STDC__ */ 1.67 cvs 654: ThotBool IsValidProtocol (url) 655: const STRING url; 1.3 cvs 656: #endif /* __STDC__ */ 657: { 1.67 cvs 658: if (!ustrncmp (url, TEXT("http:"), 5) 1.69 cvs 659: || !ustrncmp (url, TEXT("internal:"), 9) 1.70 cvs 660: || !ustrncmp (url, TEXT("ftp:"), 4)) 1.22 cvs 661: /* experimental */ 1.58 cvs 662: /*** || !strncmp (url, "ftp:", 4) ***/ 1.24 cvs 663: /*** || !strncmp (path, "news:", 5)***/ 1.8 cvs 664: return (TRUE); 1.5 cvs 665: else 1.8 cvs 666: return (FALSE); 1.3 cvs 667: } 668: 1.31 cvs 669: 670: /*---------------------------------------------------------------------- 671: GetBaseURL 672: normalizes orgName according to a base associated with doc, and 673: following the standard URL format rules. 674: The function returns the base used to solve relative URL and SRC: 675: - the base of the document, 676: - or the document path (without document name). 677: ----------------------------------------------------------------------*/ 678: #ifdef __STDC__ 1.67 cvs 679: STRING GetBaseURL (Document doc) 1.31 cvs 680: #else /* __STDC__ */ 1.67 cvs 681: STRING GetBaseURL (doc) 1.31 cvs 682: Document doc; 683: #endif /* __STDC__ */ 684: { 685: Element el; 686: ElementType elType; 687: AttributeType attrType; 688: Attribute attr; 1.67 cvs 689: STRING ptr, basename; 1.31 cvs 690: int length; 691: 1.57 cvs 692: /* @@@ irene */ 693: if (!DocumentURLs[doc]) 694: return NULL; 1.67 cvs 695: basename = TtaAllocString (MAX_LENGTH); 696: ustrncpy (basename, DocumentURLs[doc], MAX_LENGTH-1); 1.39 cvs 697: basename[MAX_LENGTH-1] = EOS; 1.31 cvs 698: length = MAX_LENGTH -1; 699: /* get the root element */ 700: el = TtaGetMainRoot (doc); 701: /* search the BASE element */ 702: elType.ElSSchema = TtaGetDocumentSSchema (doc); 1.65 cvs 703: elType.ElTypeNum = HTML_EL_HEAD; 704: el = TtaSearchTypedElement (elType, SearchForward, el); 705: if (el) 706: { 707: elType.ElTypeNum = HTML_EL_BASE; 708: el = TtaSearchTypedElement (elType, SearchInTree, el); 709: } 1.31 cvs 710: if (el) 711: { 712: /* The document has a BASE element -> Get the HREF attribute */ 713: attrType.AttrSSchema = elType.ElSSchema; 714: attrType.AttrTypeNum = HTML_ATTR_HREF_; 715: attr = TtaGetAttribute (el, attrType); 716: if (attr) 717: { 718: /* Use the base path of the document */ 719: TtaGiveTextAttributeValue (attr, basename, &length); 720: /* base and orgName have to be separated by a DIR_SEP */ 721: length--; 1.43 cvs 722: if (basename[0] != EOS && basename[length] != URL_SEP && basename[length] != DIR_SEP) 1.31 cvs 723: /* verify if the base has the form "protocol://server:port" */ 724: { 1.67 cvs 725: ptr = AmayaParseUrl (basename, _EMPTYSTR_, AMAYA_PARSE_ACCESS | 1.33 cvs 726: AMAYA_PARSE_HOST | 727: AMAYA_PARSE_PUNCTUATION); 1.67 cvs 728: if (ptr && !ustrcmp (ptr, basename)) 1.31 cvs 729: { 1.43 cvs 730: /* it has this form, we complete it by adding a URL_STR */ 1.67 cvs 731: if (ustrchr (basename, DIR_SEP)) 732: ustrcat (basename, DIR_STR); 1.43 cvs 733: else 1.67 cvs 734: ustrcat (basename, URL_STR); 1.31 cvs 735: length++; 736: } 737: if (ptr) 738: TtaFreeMemory (ptr); 739: } 740: } 1.33 cvs 741: } 742: 1.31 cvs 743: /* Remove anything after the last DIR_SEP char. If no such char is found, 744: * then search for the first ":" char, hoping that what's before that is a 745: * protocol. If found, end the string there. If neither char is found, 746: * then discard the whole base element. 747: */ 1.67 cvs 748: length = ustrlen (basename) - 1; 1.31 cvs 749: /* search for the last DIR_SEP char */ 1.43 cvs 750: while (length >= 0 && basename[length] != URL_SEP && basename[length] != DIR_SEP) 1.31 cvs 751: length--; 752: if (length >= 0) 753: /* found the last DIR_SEP char, end the string there */ 754: basename[length + 1] = EOS; 755: else 756: /* search for the first PATH_STR char */ 757: { 1.67 cvs 758: for (length = 0; basename[length] != TEXT(':') && 1.31 cvs 759: basename[length] != EOS; length ++); 1.67 cvs 760: if (basename[length] == TEXT(':')) 1.31 cvs 761: /* found, so end the string there */ 762: basename[length + 1] = EOS; 763: else 764: /* not found, discard the base */ 765: basename[0] = EOS; 766: } 767: return (basename); 768: } 769: 770: 1.4 cvs 771: /*---------------------------------------------------------------------- 1.40 cvs 772: GetLocalPath 773: Allocate and return the local document path associated to the url 774: ----------------------------------------------------------------------*/ 775: #ifdef __STDC__ 1.67 cvs 776: STRING GetLocalPath (Document doc, STRING url) 1.40 cvs 777: #else /* __STDC__ */ 1.67 cvs 778: STRING GetLocalPath (doc, url) 1.40 cvs 779: Document doc; 1.67 cvs 780: STRING url; 1.40 cvs 781: #endif /* __STDC__ */ 782: { 1.67 cvs 783: STRING ptr, n; 784: STRING documentname; 785: CHAR_T url_sep; 1.40 cvs 786: int len; 1.67 cvs 787: STRING tmpDir, tmpName; 788: ThotBool noFile; 1.40 cvs 789: 790: if (url != NULL) 791: { 792: /* check whether the file name exists */ 1.67 cvs 793: len = ustrlen (url) - 1; 1.71 cvs 794: if (IsW3Path (url)) 1.67 cvs 795: url_sep = TEXT('/'); 1.41 cvs 796: else 797: url_sep = DIR_SEP; 798: noFile = (url[len] == url_sep); 1.40 cvs 799: if (noFile) 800: url[len] = EOS; 1.67 cvs 801: /* ptr = TtaAllocString (MAX_LENGTH); 802: documentname = TtaAllocString (MAX_LENGTH); */ 803: tmpDir = TtaAllocString (MAX_LENGTH ); 804: tmpName = TtaAllocString(MAX_LENGTH ); 805: TtaExtractName (url, tmpDir, tmpName); 806: ptr = tmpDir; 807: documentname = tmpName; 808: 809: usprintf (ptr, TEXT("%s%s%d%s"), TempFileDirectory, DIR_STR, doc, DIR_STR); 1.40 cvs 810: if (!TtaCheckDirectory (ptr)) 811: /* directory did not exist */ 1.72 cvs 812: TtaMakeDirectory (ptr); 1.47 cvs 813: 814: /* don't include the query string within document name */ 1.67 cvs 815: n = ustrrchr(documentname, TEXT('?')); 1.47 cvs 816: if (n != NULL) 817: *n = EOS; 1.46 cvs 818: /* don't include ':' within document name */ 1.67 cvs 819: n = ustrchr (documentname, TEXT(':')); 1.46 cvs 820: if (n != NULL) 821: *n = EOS; 1.69 cvs 822: /* if after all this operations document name 823: is empty, let's use noname.html instead */ 824: if (documentname[0] == EOS) 825: ustrcat (ptr, TEXT("noname.html")); 826: else 827: ustrcat (ptr, documentname); 1.40 cvs 828: TtaFreeMemory (documentname); 829: /* restore the url */ 830: if (noFile) 1.41 cvs 831: url[len] = url_sep; 1.40 cvs 832: return (ptr); 833: } 834: else 835: return (NULL); 836: } 837: 1.73 cvs 838: /*---------------------------------------------------------------------- 839: ConvertFileURL 840: If the URL starts with file: prefix, it removes the protocol so that we 841: can use it as a local filename 842: ----------------------------------------------------------------------*/ 843: #ifdef __STDC__ 844: void ConvertFileURL (STRING url) 845: #else 846: void ConvertFileURL (url) 847: STRING url 848: #endif /* __STDC__ */ 849: { 850: if (!ustrncasecmp (url, TEXT("file:"), 5)) 851: ustrcpy (url, url + 5); 852: } 1.40 cvs 853: 854: /*---------------------------------------------------------------------- 1.9 cvs 855: NormalizeURL 856: normalizes orgName according to a base associated with doc, and 857: following the standard URL format rules. 1.53 cvs 858: if doc is 0 and otherPath not NULL, normalizes orgName according to this 859: other path. 1.9 cvs 860: The function returns the new complete and normalized URL 1.12 cvs 861: or file name path (newName) and the name of the document (docName). 1.9 cvs 862: N.B. If the function can't find out what's the docName, it assigns 863: the name "noname.html". 1.4 cvs 864: ----------------------------------------------------------------------*/ 1.3 cvs 865: #ifdef __STDC__ 1.67 cvs 866: void NormalizeURL (STRING orgName, Document doc, STRING newName, STRING docName, STRING otherPath) 1.3 cvs 867: #else /* __STDC__ */ 1.53 cvs 868: void NormalizeURL (orgName, doc, newName, docName, otherPath) 1.67 cvs 869: STRING orgName; 1.3 cvs 870: Document doc; 1.67 cvs 871: STRING newName; 872: STRING docName; 873: STRING otherPath; 1.3 cvs 874: #endif /* __STDC__ */ 875: { 1.67 cvs 876: STRING basename; 877: CHAR_T tempOrgName[MAX_LENGTH]; 878: STRING ptr; 879: CHAR_T used_sep; 880: int length; 1.66 cvs 881: ThotBool check; 1.5 cvs 882: 1.44 cvs 883: # ifdef _WINDOWS 884: int ndx; 885: # endif /* _WINDOWS */ 886: 1.5 cvs 887: if (!newName || !docName) 888: return; 1.18 cvs 889: 1.32 cvs 890: if (doc != 0) 1.53 cvs 891: basename = GetBaseURL (doc); 892: else if (otherPath != NULL) 893: basename = TtaStrdup (otherPath); 1.32 cvs 894: else 1.53 cvs 895: basename = NULL; 1.32 cvs 896: 1.18 cvs 897: /* 1.31 cvs 898: * Clean orgName 899: * Make sure we have a complete orgName, without any leading or trailing 900: * white spaces, or trailinbg new lines 901: */ 1.5 cvs 902: ptr = orgName; 1.18 cvs 903: /* skip leading white space and new line characters */ 1.67 cvs 904: while ((*ptr == SPACE || *ptr == EOL) && *ptr++ != EOS); 905: ustrncpy (tempOrgName, ptr, MAX_LENGTH -1); 1.39 cvs 906: tempOrgName[MAX_LENGTH -1] = EOS; 1.18 cvs 907: /* 1.31 cvs 908: * Make orgName a complete URL 909: * If the URL does not include a protocol, then try to calculate 910: * one using the doc's base element (if it exists), 911: */ 1.53 cvs 912: if (tempOrgName[0] == EOS) 913: { 914: newName[0] = EOS; 915: TtaFreeMemory (basename); 916: return; 917: } 1.49 cvs 918: 919: /* clean trailing white space */ 1.67 cvs 920: length = ustrlen (tempOrgName) - 1; 1.53 cvs 921: while (tempOrgName[length] == SPACE && tempOrgName[length] == EOL) 922: { 923: tempOrgName[length] = EOS; 924: length--; 925: } 1.50 cvs 926: 1.55 cvs 927: /* remove extra dot (which dot???) */ 928: /* ugly, but faster than a strcmp */ 1.67 cvs 929: if (tempOrgName[length] == TEXT('.') 930: && (length == 0 || tempOrgName[length-1] != TEXT('.'))) 1.55 cvs 931: tempOrgName[length] = EOS; 1.50 cvs 932: 1.53 cvs 933: if (IsW3Path (tempOrgName)) 934: { 935: /* the name is complete, go to the Sixth Step */ 1.67 cvs 936: ustrcpy (newName, tempOrgName); 1.53 cvs 937: SimplifyUrl (&newName); 938: /* verify if the URL has the form "protocol://server:port" */ 1.67 cvs 939: ptr = AmayaParseUrl (newName, _EMPTYSTR_, AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION); 940: if (ptr && !ustrcmp (ptr, newName)) /* it has this form, we complete it by adding a DIR_STR */ 941: ustrcat (newName, URL_STR); 1.49 cvs 942: 1.53 cvs 943: if (ptr) 1.50 cvs 944: TtaFreeMemory (ptr); 1.53 cvs 945: } 946: else if ( basename == NULL) 947: /* the name is complete, go to the Sixth Step */ 1.67 cvs 948: ustrcpy (newName, tempOrgName); 1.53 cvs 949: else 950: { 1.31 cvs 951: /* Calculate the absolute URL, using the base or document URL */ 1.44 cvs 952: # ifdef _WINDOWS 1.53 cvs 953: if (!IsW3Path (basename)) 954: { 1.67 cvs 955: length = ustrlen (tempOrgName); 1.53 cvs 956: for (ndx = 0; ndx < length; ndx++) 1.67 cvs 957: if (tempOrgName [ndx] == TEXT('/')) 958: tempOrgName [ndx] = TEXT('\\'); 1.53 cvs 959: } 1.44 cvs 960: # endif /* _WINDOWS */ 1.25 cvs 961: ptr = AmayaParseUrl (tempOrgName, basename, AMAYA_PARSE_ALL); 1.53 cvs 962: if (ptr) 963: { 964: SimplifyUrl (&ptr); 1.67 cvs 965: ustrcpy (newName, ptr); 1.53 cvs 966: TtaFreeMemory (ptr); 967: } 968: else 969: newName[0] = EOS; 970: } 1.36 cvs 971: 972: TtaFreeMemory (basename); 1.18 cvs 973: /* 1.31 cvs 974: * Prepare the docname that will refer to this ressource in the 975: * .amaya directory. If the new URL finishes on DIR_SEP, then use 976: * noname.html as a default ressource name 1.18 cvs 977: */ 1.53 cvs 978: if (newName[0] != EOS) 979: { 1.67 cvs 980: length = ustrlen (newName) - 1; 1.53 cvs 981: if (newName[length] == URL_SEP || newName[length] == DIR_SEP) 982: { 983: used_sep = newName[length]; 984: check = TRUE; 985: while (check) 986: { 1.50 cvs 987: length--; 988: while (length >= 0 && newName[length] != used_sep) 1.53 cvs 989: length--; 1.67 cvs 990: if (!ustrncmp (&newName[length+1], TEXT(".."), 2)) 1.53 cvs 991: { 992: newName[length+1] = EOS; 993: /* remove also previous directory */ 994: length--; 995: while (length >= 0 && newName[length] != used_sep) 996: length--; 1.67 cvs 997: if (ustrncmp (&newName[length+1], TEXT("//"), 2)) 1.53 cvs 998: /* don't remove server name */ 1.50 cvs 999: newName[length+1] = EOS; 1.53 cvs 1000: } 1.67 cvs 1001: else if (!ustrncmp (&newName[length+1], TEXT("."), 1)) 1.53 cvs 1002: newName[length+1] = EOS; 1.50 cvs 1003: else 1.53 cvs 1004: check = FALSE; 1005: } 1.67 cvs 1006: ustrcpy (docName, TEXT("noname.html")); 1.53 cvs 1007: /* docname was not comprised inside the URL, so let's */ 1008: /* assign the default ressource name */ 1.67 cvs 1009: ustrcpy (docName, TEXT("noname.html")); 1.53 cvs 1010: } 1011: else 1012: { /* docname is comprised inside the URL */ 1.50 cvs 1013: while (length >= 0 && newName[length] != URL_SEP && newName[length] != DIR_SEP) 1.53 cvs 1014: length--; 1015: if (length < 0) 1.67 cvs 1016: ustrcpy (docName, newName); 1.53 cvs 1017: else 1.67 cvs 1018: ustrcpy (docName, &newName[length+1]); 1.53 cvs 1019: } 1020: } 1021: else 1022: docName[0] = EOS; 1.18 cvs 1023: } 1.3 cvs 1024: 1.4 cvs 1025: /*---------------------------------------------------------------------- 1.9 cvs 1026: IsSameHost 1.4 cvs 1027: ----------------------------------------------------------------------*/ 1.3 cvs 1028: #ifdef __STDC__ 1.67 cvs 1029: ThotBool IsSameHost (const STRING url1, const STRING url2) 1.3 cvs 1030: #else /* __STDC__ */ 1.67 cvs 1031: ThotBool IsSameHost (url1, url2) 1032: const STRING url1; 1033: const STRING url2; 1.3 cvs 1034: #endif /* __STDC__ */ 1035: { 1.67 cvs 1036: STRING basename_ptr1, basename_ptr2; 1037: ThotBool result; 1.3 cvs 1038: 1.67 cvs 1039: basename_ptr1 = AmayaParseUrl (url1, _EMPTYSTR_, AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION); 1040: basename_ptr2 = AmayaParseUrl (url2, _EMPTYSTR_, AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION); 1.3 cvs 1041: 1.67 cvs 1042: if (ustrcmp (basename_ptr1, basename_ptr2)) 1.8 cvs 1043: result = FALSE; 1.5 cvs 1044: else 1.8 cvs 1045: result = TRUE; 1.3 cvs 1046: 1.25 cvs 1047: TtaFreeMemory (basename_ptr1); 1048: TtaFreeMemory (basename_ptr2); 1.5 cvs 1049: return (result); 1.3 cvs 1050: } 1051: 1052: 1.4 cvs 1053: /*---------------------------------------------------------------------- 1.22 cvs 1054: HasKnownFileSuffix 1055: returns TRUE if path points to a file ending with a suffix. 1056: ----------------------------------------------------------------------*/ 1057: #ifdef __STDC__ 1.67 cvs 1058: ThotBool HasKnownFileSuffix (const STRING path) 1.22 cvs 1059: #else /* __STDC__ */ 1.67 cvs 1060: ThotBool HasKnownFileSuffix (path) 1061: const STRING path; 1.22 cvs 1062: #endif /* __STDC__ */ 1063: { 1.67 cvs 1064: STRING root; 1065: CHAR_T temppath[MAX_LENGTH]; 1066: CHAR_T suffix[MAX_LENGTH]; 1.22 cvs 1067: 1.67 cvs 1068: if (!path || path[0] == EOS || path[ustrlen(path)] == DIR_SEP) 1.22 cvs 1069: return (FALSE); 1070: 1.67 cvs 1071: root = AmayaParseUrl(path, _EMPTYSTR_, AMAYA_PARSE_PATH | AMAYA_PARSE_PUNCTUATION); 1.22 cvs 1072: 1073: if (root) 1074: { 1.67 cvs 1075: ustrcpy (temppath, root); 1.25 cvs 1076: TtaFreeMemory (root); 1.22 cvs 1077: /* Get the suffix */ 1078: ExtractSuffix (temppath, suffix); 1079: 1080: if( suffix[0] == EOS) 1081: /* no suffix */ 1082: return (FALSE); 1083: 1084: /* Normalize the suffix */ 1085: ConvertToLowerCase (suffix); 1086: 1.67 cvs 1087: if (!ustrcmp (suffix, TEXT("gz"))) 1.22 cvs 1088: /* skip the compressed suffix */ 1089: { 1090: ExtractSuffix (temppath, suffix); 1091: if(suffix[0] == EOS) 1092: /* no suffix */ 1093: return (FALSE); 1094: /* Normalize the suffix */ 1095: ConvertToLowerCase (suffix); 1096: } 1097: 1.67 cvs 1098: if (ustrcmp (suffix, TEXT("gif")) && 1099: ustrcmp (suffix, TEXT("xbm")) && 1100: ustrcmp (suffix, TEXT("xpm")) && 1101: ustrcmp (suffix, TEXT("jpg")) && 1102: ustrcmp (suffix, TEXT("pdf")) && 1103: ustrcmp (suffix, TEXT("png")) && 1104: ustrcmp (suffix, TEXT("tgz")) && 1105: ustrcmp (suffix, TEXT("xpg")) && 1106: ustrcmp (suffix, TEXT("xpd")) && 1107: ustrcmp (suffix, TEXT("ps")) && 1108: ustrcmp (suffix, TEXT("au")) && 1109: ustrcmp (suffix, TEXT("html")) && 1110: ustrcmp (suffix, TEXT("htm")) && 1111: ustrcmp (suffix, TEXT("shtml")) && 1112: ustrcmp (suffix, TEXT("xht")) && 1113: ustrcmp (suffix, TEXT("xhtm")) && 1114: ustrcmp (suffix, TEXT("xhtml")) && 1115: ustrcmp (suffix, TEXT("txt")) && 1116: ustrcmp (suffix, TEXT("css")) && 1117: ustrcmp (suffix, TEXT("eps"))) 1.22 cvs 1118: return (FALSE); 1119: else 1120: return (TRUE); 1121: } 1122: else 1123: return (FALSE); 1124: } 1125: 1126: 1127: /*---------------------------------------------------------------------- 1.24 cvs 1128: ChopURL 1129: Gives back a URL no longer than MAX_PRINT_URL_LENGTH chars (outputURL). 1130: If inputURL is bigger than that size, outputURL receives 1131: MAX_PRINT_URL_LENGTH / 2 chars from the beginning of inputURL, "...", 1132: and MAX_PRINT_URL_LENGTH / 2 chars from the end of inputURL. 1133: If inputURL is not longer than MAX_PRINT_URL_LENGTH chars, it gets 1134: copied into outputURL. 1135: N.B.: outputURL must point to a memory block of MAX_PRINT_URL_LENGTH 1136: chars. 1137: ----------------------------------------------------------------------*/ 1138: #ifdef __STDC__ 1.34 cvs 1139: void ChopURL (char *outputURL, const char *inputURL) 1.24 cvs 1140: #else 1141: void ChopURL (outputURL, inputURL) 1.34 cvs 1142: char *outputURL; 1143: const char *inputURL; 1.24 cvs 1144: #endif 1.22 cvs 1145: 1.24 cvs 1146: { 1147: int len; 1.9 cvs 1148: 1.24 cvs 1149: len = strlen (inputURL); 1150: if (len <= MAX_PRINT_URL_LENGTH) 1.29 cvs 1151: strcpy (outputURL, inputURL); 1.24 cvs 1152: else 1153: /* make a truncated urlName on the status window */ 1154: { 1155: strncpy (outputURL, inputURL, MAX_PRINT_URL_LENGTH / 2); 1156: outputURL [MAX_PRINT_URL_LENGTH / 2] = EOS; 1157: strcat (outputURL, "..."); 1158: strcat (outputURL, &(inputURL[len - MAX_PRINT_URL_LENGTH / 2 ])); 1159: } 1.25 cvs 1160: } 1161: 1162: 1163: /*---------------------------------------------------------------------- 1164: scan 1.47 cvs 1165: Scan a filename for its constituents 1.25 cvs 1166: ----------------------------------- 1167: 1168: On entry, 1169: name points to a document name which may be incomplete. 1170: On exit, 1171: absolute or relative may be nonzero (but not both). 1172: host, fragment and access may be nonzero if they were specified. 1173: Any which are nonzero point to zero terminated strings. 1174: ----------------------------------------------------------------------*/ 1175: #ifdef __STDC__ 1.67 cvs 1176: static void scan (STRING name, HTURI * parts) 1.25 cvs 1177: #else /* __STDC__ */ 1178: static void scan (name, parts) 1.67 cvs 1179: STRING name; 1180: HTURI *parts; 1.25 cvs 1181: 1182: #endif /* __STDC__ */ 1183: { 1.67 cvs 1184: STRING p; 1185: STRING after_access = name; 1.32 cvs 1186: 1.43 cvs 1187: memset (parts, '\0', sizeof (HTURI)); 1.28 cvs 1188: /* Look for fragment identifier */ 1.67 cvs 1189: if ((p = ustrchr(name, TEXT('#'))) != NULL) 1.28 cvs 1190: { 1.67 cvs 1191: *p++ = TEXT('\0'); 1.28 cvs 1192: parts->fragment = p; 1.25 cvs 1193: } 1194: 1.28 cvs 1195: for (p=name; *p; p++) 1196: { 1.67 cvs 1197: if (*p == URL_SEP || *p == DIR_SEP || *p == TEXT('#') || *p == TEXT('?')) 1.28 cvs 1198: break; 1.67 cvs 1199: if (*p == TEXT(':')) 1.28 cvs 1200: { 1201: *p = 0; 1202: parts->access = after_access; /* Scheme has been specified */ 1203: 1204: /* The combination of gcc, the "-O" flag and the HP platform is 1205: unhealthy. The following three lines is a quick & dirty fix, but is 1206: not recommended. Rather, turn off "-O". */ 1207: 1208: /* after_access = p;*/ 1209: /* while (*after_access == 0)*/ 1210: /* after_access++;*/ 1211: after_access = p+1; 1.67 cvs 1212: if (!ustrcasecmp(TEXT("URL"), parts->access)) 1.28 cvs 1213: /* Ignore IETF's URL: pre-prefix */ 1214: parts->access = NULL; 1215: else 1.25 cvs 1216: break; 1217: } 1218: } 1219: 1220: p = after_access; 1.43 cvs 1221: if (*p == URL_SEP || *p == DIR_SEP) 1.28 cvs 1222: { 1.43 cvs 1223: if (p[1] == URL_SEP) 1.28 cvs 1224: { 1.25 cvs 1225: parts->host = p+2; /* host has been specified */ 1.28 cvs 1226: *p = 0; /* Terminate access */ 1227: /* look for end of host name if any */ 1.67 cvs 1228: p = ustrchr (parts->host, URL_SEP); 1.28 cvs 1229: if (p) 1230: { 1.43 cvs 1231: *p = EOS; /* Terminate host */ 1.25 cvs 1232: parts->absolute = p+1; /* Root has been found */ 1.28 cvs 1233: } 1234: } 1235: else 1236: /* Root found but no host */ 1237: parts->absolute = p+1; 1238: } 1239: else 1240: { 1.25 cvs 1241: parts->relative = (*after_access) ? after_access : 0; /* zero for "" */ 1.28 cvs 1242: } 1.25 cvs 1243: } 1244: 1245: 1246: /*---------------------------------------------------------------------- 1.28 cvs 1247: AmayaParseUrl: parse a Name relative to another name 1248: 1249: This returns those parts of a name which are given (and requested) 1250: substituting bits from the related name where necessary. 1.25 cvs 1251: 1.28 cvs 1252: On entry, 1.25 cvs 1253: aName A filename given 1254: relatedName A name relative to which aName is to be parsed. Give 1255: it an empty string if aName is absolute. 1256: wanted A mask for the bits which are wanted. 1257: 1.28 cvs 1258: On exit, 1.25 cvs 1259: returns A pointer to a malloc'd string which MUST BE FREED 1260: ----------------------------------------------------------------------*/ 1261: #ifdef __STDC__ 1.67 cvs 1262: STRING AmayaParseUrl (const STRING aName, STRING relatedName, int wanted) 1.25 cvs 1263: #else /* __STDC__ */ 1.67 cvs 1264: STRING AmayaParseUrl (aName, relatedName, wanted) 1265: const STRING aName; 1266: STRING relatedName; 1.28 cvs 1267: int wanted; 1.25 cvs 1268: 1269: #endif /* __STDC__ */ 1270: { 1.67 cvs 1271: STRING return_value; 1272: CHAR_T result[MAX_LENGTH]; 1273: CHAR_T name[MAX_LENGTH]; 1274: CHAR_T rel[MAX_LENGTH]; 1275: STRING p, access; 1.29 cvs 1276: HTURI given, related; 1277: int len; 1.67 cvs 1278: CHAR_T used_sep; 1279: STRING used_str; 1.32 cvs 1280: 1.67 cvs 1281: if (ustrchr (aName, DIR_SEP) || ustrchr (relatedName, DIR_SEP)) 1.33 cvs 1282: { 1.42 cvs 1283: used_str = DIR_STR; 1284: used_sep = DIR_SEP; 1.33 cvs 1285: } 1.32 cvs 1286: else 1.33 cvs 1287: { 1.42 cvs 1288: used_str = URL_STR; 1289: used_sep = URL_SEP; 1.33 cvs 1290: } 1.32 cvs 1291: 1.29 cvs 1292: /* Make working copies of input strings to cut up: */ 1293: return_value = NULL; 1294: result[0] = 0; /* Clear string */ 1.67 cvs 1295: ustrcpy (name, aName); 1.29 cvs 1296: if (relatedName != NULL) 1.67 cvs 1297: ustrcpy (rel, relatedName); 1.29 cvs 1298: else 1299: relatedName[0] = EOS; 1300: 1301: scan (name, &given); 1302: scan (rel, &related); 1303: access = given.access ? given.access : related.access; 1304: if (wanted & AMAYA_PARSE_ACCESS) 1305: if (access) 1306: { 1.67 cvs 1307: ustrcat (result, access); 1.29 cvs 1308: if(wanted & AMAYA_PARSE_PUNCTUATION) 1.67 cvs 1309: ustrcat (result, TEXT(":")); 1.29 cvs 1310: } 1311: 1312: if (given.access && related.access) 1313: /* If different, inherit nothing. */ 1.67 cvs 1314: if (ustrcmp (given.access, related.access) != 0) 1.29 cvs 1315: { 1316: related.host = 0; 1317: related.absolute = 0; 1318: related.relative = 0; 1319: related.fragment = 0; 1320: } 1321: 1322: if (wanted & AMAYA_PARSE_HOST) 1323: if(given.host || related.host) 1324: { 1325: if(wanted & AMAYA_PARSE_PUNCTUATION) 1.67 cvs 1326: ustrcat (result, TEXT("//")); 1327: ustrcat (result, given.host ? given.host : related.host); 1.29 cvs 1328: } 1329: 1330: if (given.host && related.host) 1331: /* If different hosts, inherit no path. */ 1.67 cvs 1332: if (ustrcmp (given.host, related.host) != 0) 1.29 cvs 1333: { 1334: related.absolute = 0; 1335: related.relative = 0; 1336: related.fragment = 0; 1337: } 1338: 1339: if (wanted & AMAYA_PARSE_PATH) 1340: { 1341: if (given.absolute) 1342: { 1343: /* All is given */ 1344: if (wanted & AMAYA_PARSE_PUNCTUATION) 1.67 cvs 1345: ustrcat (result, used_str); 1346: ustrcat (result, given.absolute); 1.25 cvs 1347: } 1.29 cvs 1348: else if (related.absolute) 1349: { 1350: /* Adopt path not name */ 1.67 cvs 1351: ustrcat (result, used_str); 1352: ustrcat (result, related.absolute); 1.29 cvs 1353: if (given.relative) 1354: { 1355: /* Search part? */ 1.67 cvs 1356: p = ustrchr (result, TEXT('?')); 1.29 cvs 1357: if (!p) 1.67 cvs 1358: p=result+ustrlen(result)-1; 1.33 cvs 1359: for (; *p!=used_sep; p--); /* last / */ 1.29 cvs 1360: /* Remove filename */ 1361: p[1]=0; 1362: /* Add given one */ 1.67 cvs 1363: ustrcat (result, given.relative); 1.25 cvs 1364: } 1365: } 1.29 cvs 1366: else if (given.relative) 1367: /* what we've got */ 1.67 cvs 1368: ustrcat (result, given.relative); 1.29 cvs 1369: else if (related.relative) 1.67 cvs 1370: ustrcat (result, related.relative); 1.29 cvs 1371: else 1372: /* No inheritance */ 1.67 cvs 1373: ustrcat (result, used_str); 1.25 cvs 1374: } 1.29 cvs 1375: 1376: if (wanted & AMAYA_PARSE_ANCHOR) 1377: if (given.fragment || related.fragment) 1378: { 1379: if (given.absolute && given.fragment) 1380: { 1381: /*Fixes for relURLs...*/ 1382: if (wanted & AMAYA_PARSE_PUNCTUATION) 1.67 cvs 1383: ustrcat (result, TEXT("#")); 1384: ustrcat (result, given.fragment); 1.29 cvs 1385: } 1386: else if (!(given.absolute) && !(given.fragment)) 1.67 cvs 1387: ustrcat (result, _EMPTYSTR_); 1.29 cvs 1388: else 1389: { 1390: if (wanted & AMAYA_PARSE_PUNCTUATION) 1.67 cvs 1391: ustrcat (result, TEXT("#")); 1392: ustrcat (result, given.fragment ? given.fragment : related.fragment); 1.29 cvs 1393: } 1394: } 1.67 cvs 1395: len = ustrlen (result); 1396: if ((return_value = TtaAllocString (len + 1)) != NULL) 1397: ustrcpy (return_value, result); 1.29 cvs 1398: return (return_value); /* exactly the right length */ 1.25 cvs 1399: } 1400: 1401: /*---------------------------------------------------------------------- 1402: HTCanon 1403: Canonicalizes the URL in the following manner starting from the host 1404: pointer: 1405: 1406: 1) The host name is converted to lowercase 1407: 2) Chop off port if `:80' (http), `:70' (gopher), or `:21' (ftp) 1408: 1409: Return: OK The position of the current path part of the URL 1410: which might be the old one or a new one. 1411: 1412: ----------------------------------------------------------------------*/ 1413: #ifdef __STDC__ 1.67 cvs 1414: static STRING HTCanon (STRING* filename, STRING host) 1.25 cvs 1415: #else /* __STDC__ */ 1.67 cvs 1416: static STRING HTCanon (filename, host) 1417: STRING *filename; 1418: STRING host; 1.25 cvs 1419: #endif /* __STDC__ */ 1420: { 1.67 cvs 1421: STRING newname = NULL; 1422: STRING port; 1423: STRING strptr; 1424: STRING path; 1425: STRING access = host-3; 1426: CHAR_T used_sep; 1.32 cvs 1427: 1428: 1.67 cvs 1429: if (*filename && ustrchr (*filename, URL_SEP)) 1.33 cvs 1430: { 1431: used_sep = URL_SEP; 1432: } 1433: else 1434: { 1435: used_sep = DIR_SEP; 1436: } 1.32 cvs 1437: 1.33 cvs 1438: while (access>*filename && *(access-1)!= used_sep) /* Find access method */ 1.25 cvs 1439: access--; 1.67 cvs 1440: if ((path = ustrchr(host, used_sep)) == NULL) /* Find path */ 1441: path = host + ustrlen(host); 1442: if ((strptr = ustrchr(host, TEXT('@'))) != NULL && strptr<path) /* UserId */ 1.25 cvs 1443: host = strptr; 1.67 cvs 1444: if ((port = ustrchr(host, TEXT(':'))) != NULL && port>path) /* Port number */ 1.25 cvs 1445: port = NULL; 1446: 1447: strptr = host; /* Convert to lower-case */ 1.33 cvs 1448: while (strptr<path) 1449: { 1.25 cvs 1450: *strptr = tolower(*strptr); 1451: strptr++; 1.33 cvs 1452: } 1.25 cvs 1453: 1454: /* Does the URL contain a full domain name? This also works for a 1455: numerical host name. The domain name is already made lower-case 1456: and without a trailing dot. */ 1457: { 1.67 cvs 1458: STRING dot = port ? port : path; 1459: if (dot > *filename && *--dot == TEXT('.')) 1.33 cvs 1460: { 1.67 cvs 1461: STRING orig=dot, dest=dot+1; 1.33 cvs 1462: while((*orig++ = *dest++)); 1463: if (port) port--; 1464: path--; 1.25 cvs 1465: } 1466: } 1467: /* Chop off port if `:', `:80' (http), `:70' (gopher), or `:21' (ftp) */ 1.33 cvs 1468: if (port) 1469: { 1470: if (!*(port+1) || *(port+1)==used_sep) 1471: { 1472: if (!newname) 1473: { 1.67 cvs 1474: STRING orig=port, dest=port+1; 1.25 cvs 1475: while((*orig++ = *dest++)); 1.33 cvs 1476: } 1477: } 1.67 cvs 1478: else if ((!ustrncmp(access, TEXT("http"), 4) && 1479: (*(port+1) == TEXT('8') && *(port+2) == TEXT('0') && (*(port+3) == used_sep || !*(port + 3)))) || 1480: (!ustrncmp (access, TEXT("gopher"), 6) && 1481: (*(port+1) == TEXT('7') && *(port+2) == TEXT('0') && (*(port+3) == used_sep || !*(port+3)))) || 1482: (!ustrncmp(access, TEXT("ftp"), 3) && 1483: (*(port+1) == TEXT('2') && *(port + 2) == TEXT('1') && (*(port+3) == used_sep || !*(port+3))))) { 1.33 cvs 1484: if (!newname) 1485: { 1.67 cvs 1486: STRING orig=port, dest=port+3; 1.33 cvs 1487: while((*orig++ = *dest++)); 1488: /* Update path position, Henry Minsky */ 1489: path -= 3; 1.25 cvs 1490: } 1.33 cvs 1491: } 1492: else if (newname) 1.67 cvs 1493: ustrncat(newname, port, (int) (path-port)); 1.33 cvs 1494: } 1.25 cvs 1495: 1.33 cvs 1496: if (newname) 1497: { 1.67 cvs 1498: STRING newpath = newname + ustrlen (newname); 1499: ustrcat(newname, path); 1.25 cvs 1500: path = newpath; 1.28 cvs 1501: /* Free old copy */ 1502: TtaFreeMemory(*filename); 1.25 cvs 1503: *filename = newname; 1.33 cvs 1504: } 1.25 cvs 1505: return path; 1506: } 1507: 1508: 1509: /*---------------------------------------------------------------------- 1.29 cvs 1510: SimplifyUrl: simplify a URI 1.32 cvs 1511: A URI is allowed to contain the sequence xxx/../ which may be 1512: replaced by "" , and the sequence "/./" which may be replaced by DIR_STR. 1.28 cvs 1513: Simplification helps us recognize duplicate URIs. 1.25 cvs 1514: 1.28 cvs 1515: Thus, /etc/junk/../fred becomes /etc/fred 1516: /etc/junk/./fred becomes /etc/junk/fred 1.25 cvs 1517: 1.28 cvs 1518: but we should NOT change 1519: http://fred.xxx.edu/../.. 1.25 cvs 1520: 1521: or ../../albert.html 1522: 1.28 cvs 1523: In order to avoid empty URLs the following URLs become: 1.25 cvs 1524: 1525: /fred/.. becomes /fred/.. 1526: /fred/././.. becomes /fred/.. 1527: /fred/.././junk/.././ becomes /fred/.. 1528: 1.28 cvs 1529: If more than one set of `://' is found (several proxies in cascade) then 1530: only the part after the last `://' is simplified. 1.25 cvs 1531: 1.28 cvs 1532: Returns: A string which might be the old one or a new one. 1.25 cvs 1533: ----------------------------------------------------------------------*/ 1534: #ifdef __STDC__ 1.67 cvs 1535: void SimplifyUrl (STRING* url) 1.25 cvs 1536: #else /* __STDC__ */ 1.29 cvs 1537: void SimplifyUrl (url) 1.67 cvs 1538: STRING *url; 1.25 cvs 1539: #endif /* __STDC__ */ 1540: { 1.67 cvs 1541: STRING path, p; 1542: STRING newptr, access; 1543: STRING orig, dest, end; 1.28 cvs 1544: 1.67 cvs 1545: CHAR_T used_sep; 1.77 ! cvs 1546: ThotBool ddot_simplify; /* used to desactivate the double dot simplifcation: ! 1547: something/../ simplification in relative URLs when they start with a ../ */ 1.32 cvs 1548: 1549: 1.28 cvs 1550: if (!url || !*url) 1551: return; 1552: 1.67 cvs 1553: if (ustrchr (*url, URL_SEP)) 1.33 cvs 1554: { 1555: used_sep = URL_SEP; 1556: } 1.32 cvs 1557: else 1.33 cvs 1558: { 1559: used_sep = DIR_SEP; 1560: } 1.32 cvs 1561: 1.77 ! cvs 1562: /* should we simplify double dot? */ ! 1563: path = *url; ! 1564: if (*path == TEXT('.') && *(path + 1) == TEXT('.')) ! 1565: ddot_simplify = FALSE; ! 1566: else ! 1567: ddot_simplify = TRUE; ! 1568: 1.28 cvs 1569: /* Find any scheme name */ 1.67 cvs 1570: if ((path = ustrstr(*url, TEXT("://"))) != NULL) 1.33 cvs 1571: { 1572: /* Find host name */ 1.28 cvs 1573: access = *url; 1574: while (access<path && (*access=tolower(*access))) 1575: access++; 1576: path += 3; 1.67 cvs 1577: while ((newptr = ustrstr(path, TEXT("://"))) != NULL) 1.28 cvs 1578: /* For proxies */ 1579: path = newptr+3; 1580: /* We have a host name */ 1581: path = HTCanon(url, path); 1.25 cvs 1582: } 1.67 cvs 1583: else if ((path = ustrstr(*url, TEXT(":/"))) != NULL) 1.28 cvs 1584: path += 2; 1585: else 1586: path = *url; 1.25 cvs 1587: 1.33 cvs 1588: if (*path == used_sep && *(path+1)==used_sep) 1.28 cvs 1589: /* Some URLs start //<foo> */ 1590: path += 1; 1.67 cvs 1591: else if (!ustrncmp(path, TEXT("news:"), 5)) 1.28 cvs 1592: { 1.67 cvs 1593: newptr = ustrchr(path+5, TEXT('@')); 1.28 cvs 1594: if (!newptr) 1595: newptr = path + 5; 1596: while (*newptr) 1597: { 1598: /* Make group or host lower case */ 1599: *newptr = tolower (*newptr); 1600: newptr++; 1.25 cvs 1601: } 1.28 cvs 1602: /* Doesn't need to do any more */ 1603: return; 1.25 cvs 1604: } 1.28 cvs 1605: 1606: if ((p = path)) 1607: { 1.67 cvs 1608: if (!((end = ustrchr (path, TEXT(';'))) || (end = ustrchr (path, TEXT('?'))) || 1609: (end = ustrchr (path, TEXT('#'))))) 1610: end = path + ustrlen (path); 1.28 cvs 1611: 1612: /* Parse string second time to simplify */ 1613: p = path; 1614: while (p < end) 1615: { 1.77 ! cvs 1616: /* if we're pointing to a char, it's safe to reactivate the ../ convertion */ ! 1617: if (!ddot_simplify && *p != TEXT('.') && *p != used_sep) ! 1618: ddot_simplify = TRUE; ! 1619: 1.33 cvs 1620: if (*p==used_sep) 1.28 cvs 1621: { 1.67 cvs 1622: if (p > *url && *(p+1) == TEXT('.') && (*(p+2) == used_sep || !*(p+2))) 1.28 cvs 1623: { 1624: orig = p + 1; 1.33 cvs 1625: dest = (*(p+2)!=used_sep) ? p+2 : p+3; 1.52 cvs 1626: while ((*orig++ = *dest++)); /* Remove a used_sep and a dot*/ 1.28 cvs 1627: end = orig - 1; 1628: } 1.77 ! cvs 1629: else if (ddot_simplify && *(p+1) == TEXT('.') && *(p+2) == TEXT('.') ! 1630: && (*(p+3) == used_sep || !*(p+3))) 1.28 cvs 1631: { 1632: newptr = p; 1.52 cvs 1633: while (newptr>path && *--newptr!=used_sep); /* prev used_sep */ 1634: if (*newptr == used_sep) 1635: orig = newptr + 1; 1.28 cvs 1636: else 1.52 cvs 1637: orig = newptr; 1638: 1639: dest = (*(p+3) != used_sep) ? p+3 : p+4; 1640: while ((*orig++ = *dest++)); /* Remove /xxx/.. */ 1641: end = orig-1; 1642: /* Start again with prev slash */ 1643: p = newptr; 1.28 cvs 1644: } 1.33 cvs 1645: else if (*(p+1) == used_sep) 1.28 cvs 1646: { 1.33 cvs 1647: while (*(p+1) == used_sep) 1.28 cvs 1648: { 1649: orig = p; 1650: dest = p + 1; 1651: while ((*orig++ = *dest++)); /* Remove multiple /'s */ 1652: end = orig-1; 1653: } 1654: } 1655: else 1.25 cvs 1656: p++; 1.28 cvs 1657: } 1658: else 1659: p++; 1.25 cvs 1660: } 1661: } 1.51 cvs 1662: 1663: /* 1664: ** Check for host/../.. kind of things 1665: */ 1.77 ! cvs 1666: if (*path == used_sep && *(path+1) == TEXT('.') && *(path+2) == TEXT('.') ! 1667: && (!*(path+3) || *(path+3) == used_sep)) 1.51 cvs 1668: *(path+1) = EOS; 1669: 1.28 cvs 1670: return; 1671: } 1672: 1673: 1674: /*---------------------------------------------------------------------- 1675: NormalizeFile normalizes local names. 1676: Return TRUE if target and src differ. 1677: ----------------------------------------------------------------------*/ 1678: #ifdef __STDC__ 1.67 cvs 1679: ThotBool NormalizeFile (STRING src, STRING target) 1.28 cvs 1680: #else 1.67 cvs 1681: ThotBool NormalizeFile (src, target) 1682: STRING src; 1683: STRING target; 1.28 cvs 1684: 1685: #endif 1686: { 1.67 cvs 1687: STRING s; 1.66 cvs 1688: ThotBool change; 1.28 cvs 1689: 1.54 cvs 1690: change = FALSE; 1.67 cvs 1691: if (ustrncmp (src, TEXT("file:"), 5) == 0) 1.28 cvs 1692: { 1693: /* remove the prefix file: */ 1694: if (src[5] == EOS) 1.67 cvs 1695: ustrcpy (target, DIR_STR); 1696: else if (src[0] == TEXT('~')) 1.28 cvs 1697: { 1698: /* replace ~ */ 1.74 cvs 1699: s = TtaGetEnvString ("HOME"); 1.67 cvs 1700: ustrcpy (target, s); 1701: ustrcat (target, &src[5]); 1.28 cvs 1702: } 1703: else 1.67 cvs 1704: ustrcpy (target, &src[5]); 1.54 cvs 1705: change = TRUE; 1.28 cvs 1706: } 1.53 cvs 1707: # ifndef _WINDOWS 1.67 cvs 1708: else if (src[0] == TEXT('~')) 1.53 cvs 1709: { 1710: /* replace ~ */ 1711: s = (char *) TtaGetEnvString ("HOME"); 1712: strcpy (target, s); 1713: if (src[1] != DIR_SEP) 1714: strcat (target, DIR_STR); 1715: strcat (target, &src[1]); 1.54 cvs 1716: change = TRUE; 1.53 cvs 1717: } 1718: # endif /* _WINDOWS */ 1.28 cvs 1719: else 1.67 cvs 1720: ustrcpy (target, src); 1.28 cvs 1721: 1722: /* remove /../ and /./ */ 1.29 cvs 1723: SimplifyUrl (&target); 1.54 cvs 1724: if (!change) 1.67 cvs 1725: change = ustrcmp (src, target); 1.28 cvs 1726: return (change); 1.25 cvs 1727: } 1728: 1.28 cvs 1729: 1.25 cvs 1730: /*---------------------------------------------------------------------- 1.31 cvs 1731: MakeRelativeURL: make relative name 1.25 cvs 1732: 1.28 cvs 1733: This function creates and returns a string which gives an expression of 1734: one address as related to another. Where there is no relation, an absolute 1735: address is retured. 1.25 cvs 1736: 1.28 cvs 1737: On entry, 1.25 cvs 1738: Both names must be absolute, fully qualified names of nodes 1739: (no fragment bits) 1740: 1.28 cvs 1741: On exit, 1.25 cvs 1742: The return result points to a newly allocated name which, if 1743: parsed by AmayaParseUrl relative to relatedName, will yield aName. 1744: The caller is responsible for freeing the resulting name later. 1745: ----------------------------------------------------------------------*/ 1746: #ifdef __STDC__ 1.67 cvs 1747: STRING MakeRelativeURL (STRING aName, STRING relatedName) 1.25 cvs 1748: #else /* __STDC__ */ 1.67 cvs 1749: STRING MakeRelativeURL (aName, relatedName) 1750: STRING aName; 1751: STRING relatedName; 1.25 cvs 1752: #endif /* __STDC__ */ 1753: { 1.67 cvs 1754: STRING return_value; 1755: CHAR_T result[MAX_LENGTH]; 1756: STRING p; 1757: STRING q; 1758: STRING after_access; 1759: STRING last_slash = NULL; 1.29 cvs 1760: int slashes, levels, len; 1761: 1.44 cvs 1762: # ifdef _WINDOWS 1763: int ndx; 1764: # endif /* _WINDOWS */ 1765: 1.29 cvs 1766: if (aName == NULL || relatedName == NULL) 1767: return (NULL); 1768: 1769: slashes = 0; 1770: after_access = NULL; 1771: p = aName; 1772: q = relatedName; 1773: for (; *p && (*p == *q); p++, q++) 1.27 cvs 1774: { 1775: /* Find extent of match */ 1.67 cvs 1776: if (*p == TEXT(':')) 1.29 cvs 1777: after_access = p + 1; 1.28 cvs 1778: if (*p == DIR_SEP) 1.27 cvs 1779: { 1.29 cvs 1780: /* memorize the last slash position and count them */ 1.27 cvs 1781: last_slash = p; 1782: slashes++; 1.25 cvs 1783: } 1784: } 1785: 1.31 cvs 1786: /* q, p point to the first non-matching character or zero */ 1787: if (*q == EOS) 1788: { 1789: /* New name is a subset of the related name */ 1790: /* exactly the right length */ 1.67 cvs 1791: len = ustrlen (p); 1792: if ((return_value = TtaAllocString (len + 1)) != NULL) 1793: ustrcpy (return_value, p); 1.31 cvs 1794: } 1795: else if ((slashes < 2 && after_access == NULL) 1796: || (slashes < 3 && after_access != NULL)) 1797: { 1798: /* Two names whitout common path */ 1799: /* exactly the right length */ 1.67 cvs 1800: len = ustrlen (aName); 1801: if ((return_value = TtaAllocString (len + 1)) != NULL) 1802: ustrcpy (return_value, aName); 1.31 cvs 1803: } 1804: else 1805: { 1806: /* Some path in common */ 1.67 cvs 1807: if (slashes == 3 && ustrncmp (aName, TEXT("http:"), 5) == 0) 1.31 cvs 1808: /* just the same server */ 1.67 cvs 1809: ustrcpy (result, last_slash); 1.31 cvs 1810: else 1811: { 1812: levels= 0; 1.67 cvs 1813: for (; *q && *q != TEXT('#') && *q != TEXT(';') && *q != TEXT('?'); q++) 1.31 cvs 1814: if (*q == DIR_SEP) 1815: levels++; 1816: 1.52 cvs 1817: result[0] = EOS; 1.31 cvs 1818: for (;levels; levels--) 1.67 cvs 1819: ustrcat (result, TEXT("../")); 1820: ustrcat (result, last_slash+1); 1.31 cvs 1821: } 1.52 cvs 1822: 1823: if (!*result) 1.67 cvs 1824: ustrcat (result, TEXT("./")); 1.52 cvs 1825: 1.31 cvs 1826: /* exactly the right length */ 1.67 cvs 1827: len = ustrlen (result); 1828: if ((return_value = TtaAllocString (len + 1)) != NULL) 1829: ustrcpy (return_value, result); 1.52 cvs 1830: 1.25 cvs 1831: } 1.44 cvs 1832: # ifdef _WINDOWS 1.67 cvs 1833: len = ustrlen (return_value); 1.44 cvs 1834: for (ndx = 0; ndx < len; ndx ++) 1.67 cvs 1835: if (return_value[ndx] == TEXT('\\')) 1836: return_value[ndx] = TEXT('/') ; 1.44 cvs 1837: # endif /* _WINDOWS */ 1.29 cvs 1838: return (return_value); 1.24 cvs 1839: } 1.35 cvs 1840: 1841: