Annotation of Amaya/amaya/AHTURLTools.c, revision 1.46
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 {
26: char * access; /* Now known as "scheme" */
27: char * host;
28: char * absolute;
29: char * relative;
30: char * fragment;
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__
1.38 cvs 39: void ConvertToLowerCase (char *string)
1.28 cvs 40: #else /* __STDC__ */
1.38 cvs 41: void ConvertToLowerCase (string)
1.28 cvs 42: char *string;
43:
44: #endif /* __STDC__ */
45: {
46: int i;
47:
48: if (!string)
49: return;
50:
51: for (i = 0; string[i] != EOS; i++)
52: string[i] = tolower (string[i]);
53: }
1.22 cvs 54:
1.8 cvs 55: /*----------------------------------------------------------------------
1.11 cvs 56: ExplodeURL
1.8 cvs 57: ----------------------------------------------------------------------*/
58: #ifdef __STDC__
59: void ExplodeURL (char *url, char **proto, char **host, char **dir, char **file)
60: #else
61: void ExplodeURL (url, proto, host, dir, file)
62: char *url;
63: char **proto;
64: char **host;
65: char **dir;
66: char **file;
67:
68: #endif
69: {
1.33 cvs 70: char *curr, *temp;
71: char used_sep;
1.32 cvs 72:
1.33 cvs 73: if (url && strchr (url, URL_SEP))
74: used_sep = URL_SEP;
75: else
76: used_sep = DIR_SEP;
1.8 cvs 77:
78: if ((url == NULL) || (proto == NULL) || (host == NULL) ||
79: (dir == NULL) || (file == NULL))
80: return;
81:
82: /* initialize every pointer */
83: *proto = *host = *dir = *file = NULL;
84:
85: /* skip any leading space */
86: while ((*url == SPACE) || (*url == TAB))
87: url++;
1.9 cvs 88: curr = url;
89: if (*curr == 0)
1.8 cvs 90: goto finished;
91:
92: /* go to the end of the URL */
1.9 cvs 93: while ((*curr != 0) && (*curr != SPACE) && (*curr != '\b') &&
94: (*curr != '\r') && (*curr != EOL))
95: curr++;
1.8 cvs 96:
97: /* mark the end of the chain */
1.9 cvs 98: *curr = EOS;
99: curr--;
100: if (curr <= url)
1.8 cvs 101: goto finished;
102:
103: /* search the next DIR_SEP indicating the beginning of the file name */
104: do
1.11 cvs 105: curr--;
1.33 cvs 106: while ((curr >= url) && (*curr != used_sep));
1.11 cvs 107:
1.9 cvs 108: if (curr < url)
1.8 cvs 109: goto finished;
1.9 cvs 110: *file = curr + 1;
1.8 cvs 111:
112: /* mark the end of the dir */
1.9 cvs 113: *curr = EOS;
114: curr--;
115: if (curr < url)
1.8 cvs 116: goto finished;
117:
1.29 cvs 118: /* search for the DIR_STR indicating the host name start */
1.33 cvs 119: while ((curr > url) && ((*curr != used_sep) || (*(curr + 1) != used_sep)))
1.9 cvs 120: curr--;
1.8 cvs 121:
122: /* if we found it, separate the host name from the directory */
1.33 cvs 123: if ((*curr == DIR_SEP) && (*(curr + 1) == used_sep))
1.8 cvs 124: {
1.9 cvs 125: *host = temp = curr + 2;
1.33 cvs 126: while ((*temp != 0) && (*temp != used_sep))
1.8 cvs 127: temp++;
1.33 cvs 128: if (*temp == used_sep)
1.8 cvs 129: {
130: *temp = EOS;
131: *dir = temp + 1;
132: }
133: }
134: else
1.11 cvs 135: *dir = curr;
136:
1.9 cvs 137: if (curr <= url)
1.8 cvs 138: goto finished;
139:
140: /* mark the end of the proto */
1.9 cvs 141: *curr = EOS;
142: curr--;
143: if (curr < url)
1.8 cvs 144: goto finished;
145:
1.32 cvs 146: if (*curr == ':')
1.8 cvs 147: {
1.9 cvs 148: *curr = EOS;
149: curr--;
1.8 cvs 150: }
151: else
152: goto finished;
1.11 cvs 153:
1.9 cvs 154: if (curr < url)
1.8 cvs 155: goto finished;
1.9 cvs 156: while ((curr > url) && (isalpha (*curr)))
157: curr--;
158: *proto = curr;
1.8 cvs 159:
160: finished:;
161:
162: #ifdef AMAYA_DEBUG
163: fprintf (stderr, "ExplodeURL(%s)\n\t", url);
164: if (*proto)
165: fprintf (stderr, "proto : %s, ", *proto);
166: if (*host)
167: fprintf (stderr, "host : %s, ", *host);
168: if (*dir)
169: fprintf (stderr, "dir : %s, ", *dir);
170: if (*file)
171: fprintf (stderr, "file : %s ", *file);
172: fprintf (stderr, "\n");
173: #endif
174:
175: }
1.3 cvs 176:
1.4 cvs 177: /*----------------------------------------------------------------------
1.9 cvs 178: IsHTMLName
179: returns TRUE if path points to an HTML resource.
1.4 cvs 180: ----------------------------------------------------------------------*/
1.3 cvs 181: #ifdef __STDC__
1.34 cvs 182: boolean IsHTMLName (const char *path)
1.3 cvs 183: #else /* __STDC__ */
184: boolean IsHTMLName (path)
1.34 cvs 185: const char *path;
1.3 cvs 186: #endif /* __STDC__ */
187: {
1.5 cvs 188: char temppath[MAX_LENGTH];
189: char suffix[MAX_LENGTH];
190: char nsuffix[MAX_LENGTH];
191: int i;
192:
193: if (!path)
1.37 cvs 194: return (FALSE);
1.5 cvs 195:
196: strcpy (temppath, path);
197: ExtractSuffix (temppath, suffix);
198:
199: /* Normalize the suffix */
200: i = 0;
1.39 cvs 201: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.13 cvs 202: {
1.25 cvs 203: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 204: i++;
205: }
1.5 cvs 206: nsuffix[i] = EOS;
1.39 cvs 207: if ((!strcmp (nsuffix, "html")) ||
208: (!strcmp (nsuffix, "htm")) ||
209: (!strcmp (nsuffix, "shtml")))
210: return (TRUE);
1.22 cvs 211: else if (!strcmp (nsuffix, "gz"))
1.13 cvs 212: {
1.39 cvs 213: /* take into account compressed files */
1.13 cvs 214: ExtractSuffix (temppath, suffix);
215: /* Normalize the suffix */
216: i = 0;
1.39 cvs 217: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.13 cvs 218: {
1.25 cvs 219: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 220: i++;
221: }
222: nsuffix[i] = EOS;
1.39 cvs 223: if ((!strcmp (nsuffix, "html")) ||
224: (!strcmp (nsuffix, "htm")) ||
225: (!strcmp (nsuffix, "shtml")))
226: return (TRUE);
227: else
1.13 cvs 228: return (FALSE);
229: }
230: else
1.39 cvs 231: return (FALSE);
1.3 cvs 232: }
233:
1.4 cvs 234: /*----------------------------------------------------------------------
1.9 cvs 235: IsImageName
236: returns TRUE if path points to an image resource.
1.4 cvs 237: ----------------------------------------------------------------------*/
1.3 cvs 238: #ifdef __STDC__
1.34 cvs 239: boolean IsImageName (const char *path)
1.3 cvs 240: #else /* __STDC__ */
241: boolean IsImageName (path)
1.34 cvs 242: const char *path;
1.3 cvs 243: #endif /* __STDC__ */
244: {
1.5 cvs 245: char temppath[MAX_LENGTH];
246: char suffix[MAX_LENGTH];
247: char nsuffix[MAX_LENGTH];
248: int i;
249:
250: if (!path)
1.13 cvs 251: return (FALSE);
1.5 cvs 252:
253: strcpy (temppath, path);
254: ExtractSuffix (temppath, suffix);
255:
256: /* Normalize the suffix */
257: i = 0;
1.39 cvs 258: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.13 cvs 259: {
1.25 cvs 260: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 261: i++;
262: }
1.5 cvs 263: nsuffix[i] = EOS;
1.39 cvs 264: if ((!strcmp (nsuffix, "gif")) || (!strcmp (nsuffix, "xbm")) ||
265: (!strcmp (nsuffix, "xpm")) || (!strcmp (nsuffix, "jpg")) ||
266: (!strcmp (nsuffix, "png")) || (!strcmp (nsuffix, "au")))
267: return (TRUE);
268: return (FALSE);
1.3 cvs 269: }
270:
1.4 cvs 271: /*----------------------------------------------------------------------
1.9 cvs 272: IsTextName
1.4 cvs 273: ----------------------------------------------------------------------*/
1.3 cvs 274: #ifdef __STDC__
1.34 cvs 275: boolean IsTextName (const char *path)
1.3 cvs 276: #else /* __STDC__ */
277: boolean IsTextName (path)
1.34 cvs 278: const char *path;
1.3 cvs 279:
280: #endif /* __STDC__ */
281: {
1.5 cvs 282: char temppath[MAX_LENGTH];
283: char suffix[MAX_LENGTH];
284: char nsuffix[MAX_LENGTH];
285: int i;
286:
287: if (!path)
1.13 cvs 288: return (FALSE);
1.5 cvs 289:
290: strcpy (temppath, path);
291: ExtractSuffix (temppath, suffix);
292:
293: /* Normalize the suffix */
294: i = 0;
1.39 cvs 295: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.5 cvs 296: {
1.25 cvs 297: nsuffix[i] = tolower (suffix[i]);
1.5 cvs 298: i++;
299: }
300: nsuffix[i] = EOS;
301:
1.39 cvs 302: if ((!strcmp (nsuffix, "txt")) || (!strcmp (nsuffix, "dtd")))
1.13 cvs 303: return (TRUE);
1.22 cvs 304: else if (!strcmp (nsuffix, "gz"))
1.13 cvs 305: {
1.39 cvs 306: /* take into account compressed files */
1.13 cvs 307: ExtractSuffix (temppath, suffix);
308: /* Normalize the suffix */
309: i = 0;
1.39 cvs 310: while (suffix[i] != EOS && i < MAX_LENGTH -1)
1.13 cvs 311: {
1.25 cvs 312: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 313: i++;
314: }
315: nsuffix[i] = EOS;
1.39 cvs 316: if ((!strcmp (nsuffix, "txt")) || (!strcmp (nsuffix, "dtd")))
1.13 cvs 317: return (TRUE);
318: else
319: return (FALSE);
320: }
321: else
322: return (FALSE);
1.3 cvs 323: }
324:
1.4 cvs 325: /*----------------------------------------------------------------------
1.9 cvs 326: IsHTTPPath
327: returns TRUE if path is in fact an http URL.
1.4 cvs 328: ----------------------------------------------------------------------*/
1.3 cvs 329: #ifdef __STDC__
1.34 cvs 330: boolean IsHTTPPath (const char *path)
1.3 cvs 331: #else /* __STDC__ */
332: boolean IsHTTPPath (path)
1.34 cvs 333: const char *path;
1.3 cvs 334: #endif /* __STDC__ */
335: {
1.5 cvs 336: if (!path)
337: return FALSE;
1.3 cvs 338:
1.5 cvs 339: if (strncmp (path, "http:", 5) != 0)
340: return FALSE;
341: return TRUE;
1.3 cvs 342: }
343:
1.4 cvs 344: /*----------------------------------------------------------------------
1.9 cvs 345: IsWithParameters
346: returns TRUE if url has a concatenated query string.
1.4 cvs 347: ----------------------------------------------------------------------*/
1.3 cvs 348: #ifdef __STDC__
1.34 cvs 349: boolean IsWithParameters (const char *url)
1.3 cvs 350: #else /* __STDC__ */
1.9 cvs 351: boolean IsWithParameters (url)
1.34 cvs 352: const char *url;
1.3 cvs 353: #endif /* __STDC__ */
354: {
1.5 cvs 355: int i;
1.3 cvs 356:
1.9 cvs 357: if ((!url) || (url[0] == EOS))
1.5 cvs 358: return FALSE;
1.3 cvs 359:
1.9 cvs 360: i = strlen (url) - 1;
361: while (i > 0 && url[i--] != '?')
1.5 cvs 362: if (i < 0)
363: return FALSE;
1.3 cvs 364:
1.5 cvs 365: /* There is a parameter */
366: return TRUE;
1.3 cvs 367: }
368:
1.4 cvs 369: /*----------------------------------------------------------------------
1.9 cvs 370: IsW3Path
371: returns TRUE if path is in fact a URL.
1.4 cvs 372: ----------------------------------------------------------------------*/
1.3 cvs 373: #ifdef __STDC__
1.34 cvs 374: boolean IsW3Path (const char *path)
1.3 cvs 375: #else /* __STDC__ */
376: boolean IsW3Path (path)
1.34 cvs 377: const char *path;
1.3 cvs 378: #endif /* __STDC__ */
379: {
1.5 cvs 380: if ((strncmp (path, "http:", 5)) && (strncmp (path, "ftp:", 4)) &&
381: (strncmp (path, "telnet:", 7)) && (strncmp (path, "wais:", 5)) &&
382: (strncmp (path, "news:", 5)) && (strncmp (path, "gopher:", 7)) &&
383: (strncmp (path, "mailto:", 7)) && (strncmp (path, "archie:", 7)))
384: return FALSE;
385: return TRUE;
1.3 cvs 386: }
387:
1.4 cvs 388: /*----------------------------------------------------------------------
1.9 cvs 389: IsValidProtocol
390: returns true if the url protocol is supported by Amaya.
1.4 cvs 391: ----------------------------------------------------------------------*/
1.3 cvs 392: #ifdef __STDC__
1.34 cvs 393: boolean IsValidProtocol (const char *url)
1.3 cvs 394: #else /* __STDC__ */
1.9 cvs 395: boolean IsValidProtocol (url)
1.34 cvs 396: const char *url;
1.3 cvs 397: #endif /* __STDC__ */
398: {
1.26 cvs 399: if (!strncmp (url, "http:", 5))
1.22 cvs 400: /* experimental */
1.26 cvs 401: /*** || !strncmp (url, "ftp:", 4)) ***/
1.24 cvs 402: /*** || !strncmp (path, "news:", 5)***/
1.8 cvs 403: return (TRUE);
1.5 cvs 404: else
1.8 cvs 405: return (FALSE);
1.3 cvs 406: }
407:
1.31 cvs 408:
409: /*----------------------------------------------------------------------
410: GetBaseURL
411: normalizes orgName according to a base associated with doc, and
412: following the standard URL format rules.
413: The function returns the base used to solve relative URL and SRC:
414: - the base of the document,
415: - or the document path (without document name).
416: ----------------------------------------------------------------------*/
417: #ifdef __STDC__
418: char *GetBaseURL (Document doc)
419: #else /* __STDC__ */
420: char *GetBaseURL (doc)
421: Document doc;
422: #endif /* __STDC__ */
423: {
424: Element el;
425: ElementType elType;
426: AttributeType attrType;
427: Attribute attr;
428: char *ptr, *basename;
429: int length;
430:
431: basename = TtaGetMemory (MAX_LENGTH);
1.39 cvs 432: strncpy (basename, DocumentURLs[doc], MAX_LENGTH-1);
433: basename[MAX_LENGTH-1] = EOS;
1.31 cvs 434: length = MAX_LENGTH -1;
435: /* get the root element */
436: el = TtaGetMainRoot (doc);
437: /* search the BASE element */
438: elType.ElSSchema = TtaGetDocumentSSchema (doc);
439: elType.ElTypeNum = HTML_EL_BASE;
440: el = TtaSearchTypedElement (elType, SearchInTree, el);
441: if (el)
442: {
443: /* The document has a BASE element -> Get the HREF attribute */
444: attrType.AttrSSchema = elType.ElSSchema;
445: attrType.AttrTypeNum = HTML_ATTR_HREF_;
446: attr = TtaGetAttribute (el, attrType);
447: if (attr)
448: {
449: /* Use the base path of the document */
450: TtaGiveTextAttributeValue (attr, basename, &length);
451: /* base and orgName have to be separated by a DIR_SEP */
452: length--;
1.43 cvs 453: if (basename[0] != EOS && basename[length] != URL_SEP && basename[length] != DIR_SEP)
1.31 cvs 454: /* verify if the base has the form "protocol://server:port" */
455: {
1.33 cvs 456: ptr = AmayaParseUrl (basename, "", AMAYA_PARSE_ACCESS |
457: AMAYA_PARSE_HOST |
458: AMAYA_PARSE_PUNCTUATION);
1.31 cvs 459: if (ptr && !strcmp (ptr, basename))
460: {
1.43 cvs 461: /* it has this form, we complete it by adding a URL_STR */
462: if (strchr (basename, DIR_SEP))
463: strcat (basename, DIR_STR);
464: else
465: strcat (basename, URL_STR);
1.31 cvs 466: length++;
467: }
468: if (ptr)
469: TtaFreeMemory (ptr);
470: }
471: }
1.33 cvs 472: }
473:
1.31 cvs 474: /* Remove anything after the last DIR_SEP char. If no such char is found,
475: * then search for the first ":" char, hoping that what's before that is a
476: * protocol. If found, end the string there. If neither char is found,
477: * then discard the whole base element.
478: */
479: length = strlen (basename) - 1;
480: /* search for the last DIR_SEP char */
1.43 cvs 481: while (length >= 0 && basename[length] != URL_SEP && basename[length] != DIR_SEP)
1.31 cvs 482: length--;
483: if (length >= 0)
484: /* found the last DIR_SEP char, end the string there */
485: basename[length + 1] = EOS;
486: else
487: /* search for the first PATH_STR char */
488: {
1.32 cvs 489: for (length = 0; basename[length] != ':' &&
1.31 cvs 490: basename[length] != EOS; length ++);
1.32 cvs 491: if (basename[length] == ':')
1.31 cvs 492: /* found, so end the string there */
493: basename[length + 1] = EOS;
494: else
495: /* not found, discard the base */
496: basename[0] = EOS;
497: }
498: return (basename);
499: }
500:
501:
1.4 cvs 502: /*----------------------------------------------------------------------
1.40 cvs 503: GetLocalPath
504: Allocate and return the local document path associated to the url
505: ----------------------------------------------------------------------*/
506: #ifdef __STDC__
507: char *GetLocalPath (Document doc, char *url)
508: #else /* __STDC__ */
509: char *GetLocalPath (doc, url)
510: Document doc;
511: char *url;
512: #endif /* __STDC__ */
513: {
1.46 ! cvs 514: char *ptr, *n;
1.40 cvs 515: char *documentname;
1.41 cvs 516: char url_sep;
1.40 cvs 517: int len;
518: boolean noFile;
519:
520: if (url != NULL)
521: {
522: ptr = TtaGetMemory (MAX_LENGTH);
523: documentname = TtaGetMemory (MAX_LENGTH);
524: /* check whether the file name exists */
525: len = strlen (url) - 1;
1.41 cvs 526: if (IsW3Path)
527: url_sep = '/';
528: else
529: url_sep = DIR_SEP;
530: noFile = (url[len] == url_sep);
1.40 cvs 531: if (noFile)
532: url[len] = EOS;
533: TtaExtractName (url, ptr, documentname);
534: sprintf (ptr, "%s%s%d%s", TempFileDirectory, DIR_STR, doc, DIR_STR);
535: if (!TtaCheckDirectory (ptr))
536: /* directory did not exist */
537: mkdir (ptr, S_IRWXU);
1.46 ! cvs 538: /* don't include ':' within document name */
! 539: n = strchr (documentname, ':');
! 540: if (n != NULL)
! 541: *n = EOS;
1.40 cvs 542: strcat (ptr, documentname);
543: TtaFreeMemory (documentname);
544: /* restore the url */
545: if (noFile)
1.41 cvs 546: url[len] = url_sep;
1.40 cvs 547: return (ptr);
548: }
549: else
550: return (NULL);
551: }
552:
553:
554: /*----------------------------------------------------------------------
1.9 cvs 555: NormalizeURL
556: normalizes orgName according to a base associated with doc, and
557: following the standard URL format rules.
558: The function returns the new complete and normalized URL
1.12 cvs 559: or file name path (newName) and the name of the document (docName).
1.9 cvs 560: N.B. If the function can't find out what's the docName, it assigns
561: the name "noname.html".
1.4 cvs 562: ----------------------------------------------------------------------*/
1.3 cvs 563: #ifdef __STDC__
564: void NormalizeURL (char *orgName, Document doc, char *newName, char *docName)
565: #else /* __STDC__ */
566: void NormalizeURL (orgName, doc, newName, docName)
567: char *orgName;
568: Document doc;
569: char *newName;
570: char *docName;
571: #endif /* __STDC__ */
572: {
1.31 cvs 573: char *basename;
1.18 cvs 574: char tempOrgName[MAX_LENGTH];
1.5 cvs 575: char *ptr;
576: int length;
577:
1.44 cvs 578: # ifdef _WINDOWS
579: int ndx;
580: # endif /* _WINDOWS */
581:
1.5 cvs 582: if (!newName || !docName)
583: return;
1.18 cvs 584:
1.32 cvs 585: if (doc != 0)
1.33 cvs 586: basename = GetBaseURL (doc);
1.32 cvs 587: else
1.33 cvs 588: basename = (char *) NULL;
1.32 cvs 589:
1.18 cvs 590: /*
1.31 cvs 591: * Clean orgName
592: * Make sure we have a complete orgName, without any leading or trailing
593: * white spaces, or trailinbg new lines
594: */
1.5 cvs 595: ptr = orgName;
1.18 cvs 596: /* skip leading white space and new line characters */
1.19 cvs 597: while ((*ptr == ' ' || *ptr == EOL) && *ptr++ != EOS);
1.39 cvs 598: strncpy (tempOrgName, ptr, MAX_LENGTH -1);
599: tempOrgName[MAX_LENGTH -1] = EOS;
1.18 cvs 600: /* clean trailing white space */
601: ptr = strchr (tempOrgName, ' ');
602: if (ptr)
603: *ptr = EOS;
604: /* clean trailing new lines */
1.19 cvs 605: ptr = strchr (tempOrgName, EOL);
1.5 cvs 606: if (ptr)
607: *ptr = EOS;
608:
1.18 cvs 609: /*
1.31 cvs 610: * Make orgName a complete URL
611: * If the URL does not include a protocol, then try to calculate
612: * one using the doc's base element (if it exists),
613: */
1.21 cvs 614: if (tempOrgName[0] == EOS)
615: {
616: newName[0] = EOS;
1.36 cvs 617: TtaFreeMemory (basename);
1.21 cvs 618: return;
619: }
620: else if (IsW3Path (tempOrgName))
621: {
622: /* the name is complete, go to the Sixth Step */
623: strcpy (newName, tempOrgName);
624: /* verify if the URL has the form "protocol://server:port" */
1.25 cvs 625: ptr = AmayaParseUrl (newName, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST |
626: AMAYA_PARSE_PUNCTUATION);
1.21 cvs 627: if (ptr && !strcmp (ptr, newName))
1.43 cvs 628: /* it has this form, we complete it by adding a DIR_STR */
629: strcat (newName, URL_STR);
630:
1.21 cvs 631: if (ptr)
1.25 cvs 632: TtaFreeMemory (ptr);
1.21 cvs 633: }
634: else if ( doc == 0)
1.19 cvs 635: /* the name is complete, go to the Sixth Step */
1.18 cvs 636: strcpy (newName, tempOrgName);
1.5 cvs 637: else
638: {
1.31 cvs 639: /* Calculate the absolute URL, using the base or document URL */
1.44 cvs 640: # ifdef _WINDOWS
1.45 cvs 641: if (!IsW3Path (basename)) {
642: length = strlen (tempOrgName);
643: for (ndx = 0; ndx < length; ndx++)
644: if (tempOrgName [ndx] == '/')
645: tempOrgName [ndx] = '\\';
646: }
1.44 cvs 647: # endif /* _WINDOWS */
1.25 cvs 648: ptr = AmayaParseUrl (tempOrgName, basename, AMAYA_PARSE_ALL);
1.14 cvs 649: if (ptr)
650: {
1.29 cvs 651: SimplifyUrl (&ptr);
1.14 cvs 652: strcpy (newName, ptr);
1.25 cvs 653: TtaFreeMemory (ptr);
1.14 cvs 654: }
655: else
1.18 cvs 656: newName[0] = EOS;
1.5 cvs 657: }
1.36 cvs 658:
659: TtaFreeMemory (basename);
1.18 cvs 660: /*
1.31 cvs 661: * Prepare the docname that will refer to this ressource in the
662: * .amaya directory. If the new URL finishes on DIR_SEP, then use
663: * noname.html as a default ressource name
1.18 cvs 664: */
1.19 cvs 665: if (newName[0] != EOS)
1.5 cvs 666: {
1.19 cvs 667: length = strlen (newName) - 1;
1.43 cvs 668: if (newName[length] == URL_SEP || newName[length] == DIR_SEP)
1.18 cvs 669: {
670: /* docname was not comprised inside the URL, so let's */
671: /* assign the default ressource name */
672: strcpy (docName, "noname.html");
673: /* remove DIR_SEP at the end of complete path */
1.23 cvs 674: /* newName[length] = EOS; */
1.18 cvs 675: }
1.14 cvs 676: else
1.18 cvs 677: {
678: /* docname is comprised inside the URL */
1.43 cvs 679: while (length >= 0 && newName[length] != URL_SEP && newName[length] != DIR_SEP)
1.18 cvs 680: length--;
681: if (length < 0)
682: strcpy (docName, newName);
683: else
684: strcpy (docName, &newName[length+1]);
685: }
1.5 cvs 686: }
1.18 cvs 687: else
688: docName[0] = EOS;
689: }
1.3 cvs 690:
1.4 cvs 691: /*----------------------------------------------------------------------
1.9 cvs 692: IsSameHost
1.4 cvs 693: ----------------------------------------------------------------------*/
1.3 cvs 694: #ifdef __STDC__
1.34 cvs 695: boolean IsSameHost (const char *url1, const char *url2)
1.3 cvs 696: #else /* __STDC__ */
697: boolean IsSameHost (url1, url2)
1.34 cvs 698: const char *url1;
699: const char *url2;
1.3 cvs 700: #endif /* __STDC__ */
701: {
1.34 cvs 702: char *basename_ptr1, *basename_ptr2;
703: boolean result;
1.3 cvs 704:
1.25 cvs 705: basename_ptr1 = AmayaParseUrl (url1, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
706: basename_ptr2 = AmayaParseUrl (url2, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
1.3 cvs 707:
1.5 cvs 708: if (strcmp (basename_ptr1, basename_ptr2))
1.8 cvs 709: result = FALSE;
1.5 cvs 710: else
1.8 cvs 711: result = TRUE;
1.3 cvs 712:
1.25 cvs 713: TtaFreeMemory (basename_ptr1);
714: TtaFreeMemory (basename_ptr2);
1.5 cvs 715: return (result);
1.3 cvs 716: }
717:
718:
1.4 cvs 719: /*----------------------------------------------------------------------
1.22 cvs 720: HasKnownFileSuffix
721: returns TRUE if path points to a file ending with a suffix.
722: ----------------------------------------------------------------------*/
723: #ifdef __STDC__
1.34 cvs 724: boolean HasKnownFileSuffix (const char *path)
1.22 cvs 725: #else /* __STDC__ */
726: boolean HasKnownFileSuffix (path)
1.34 cvs 727: const char *path;
1.22 cvs 728: #endif /* __STDC__ */
729: {
1.29 cvs 730: char *root;
731: char temppath[MAX_LENGTH];
732: char suffix[MAX_LENGTH];
1.22 cvs 733:
1.24 cvs 734: if (!path || path[0] == EOS || path[strlen(path)] == DIR_SEP)
1.22 cvs 735: return (FALSE);
736:
1.29 cvs 737: root = AmayaParseUrl(path, "", AMAYA_PARSE_PATH | AMAYA_PARSE_PUNCTUATION);
1.22 cvs 738:
739: if (root)
740: {
741: strcpy (temppath, root);
1.25 cvs 742: TtaFreeMemory (root);
1.22 cvs 743: /* Get the suffix */
744: ExtractSuffix (temppath, suffix);
745:
746: if( suffix[0] == EOS)
747: /* no suffix */
748: return (FALSE);
749:
750: /* Normalize the suffix */
751: ConvertToLowerCase (suffix);
752:
1.23 cvs 753: if (!strcmp (suffix, "gz"))
1.22 cvs 754: /* skip the compressed suffix */
755: {
756: ExtractSuffix (temppath, suffix);
757: if(suffix[0] == EOS)
758: /* no suffix */
759: return (FALSE);
760: /* Normalize the suffix */
761: ConvertToLowerCase (suffix);
762: }
763:
764: if ((strcmp (suffix, "gif")) && (strcmp (suffix, "xbm")) &&
765: (strcmp (suffix, "xpm")) && (strcmp (suffix, "jpg")) &&
766: (strcmp (suffix, "pdf")) && (strcmp (suffix, "png")) &&
767: (strcmp (suffix, "tgz")) && (strcmp (suffix, "xpg")) &&
768: (strcmp (suffix, "xpd")) && (strcmp (suffix, "ps")) &&
769: (strcmp (suffix, "au")) && (strcmp (suffix, "html")) &&
770: (strcmp (suffix, "htm")) && (strcmp (suffix, "shtml")) &&
771: (strcmp (suffix, "txt")) && (strcmp (suffix, "css")) &&
772: (strcmp (suffix, "eps")))
773: return (FALSE);
774: else
775: return (TRUE);
776: }
777: else
778: return (FALSE);
779: }
780:
781:
782: /*----------------------------------------------------------------------
1.24 cvs 783: ChopURL
784: Gives back a URL no longer than MAX_PRINT_URL_LENGTH chars (outputURL).
785: If inputURL is bigger than that size, outputURL receives
786: MAX_PRINT_URL_LENGTH / 2 chars from the beginning of inputURL, "...",
787: and MAX_PRINT_URL_LENGTH / 2 chars from the end of inputURL.
788: If inputURL is not longer than MAX_PRINT_URL_LENGTH chars, it gets
789: copied into outputURL.
790: N.B.: outputURL must point to a memory block of MAX_PRINT_URL_LENGTH
791: chars.
792: ----------------------------------------------------------------------*/
793: #ifdef __STDC__
1.34 cvs 794: void ChopURL (char *outputURL, const char *inputURL)
1.24 cvs 795: #else
796: void ChopURL (outputURL, inputURL)
1.34 cvs 797: char *outputURL;
798: const char *inputURL;
1.24 cvs 799: #endif
1.22 cvs 800:
1.24 cvs 801: {
802: int len;
1.9 cvs 803:
1.24 cvs 804: len = strlen (inputURL);
805: if (len <= MAX_PRINT_URL_LENGTH)
1.29 cvs 806: strcpy (outputURL, inputURL);
1.24 cvs 807: else
808: /* make a truncated urlName on the status window */
809: {
810: strncpy (outputURL, inputURL, MAX_PRINT_URL_LENGTH / 2);
811: outputURL [MAX_PRINT_URL_LENGTH / 2] = EOS;
812: strcat (outputURL, "...");
813: strcat (outputURL, &(inputURL[len - MAX_PRINT_URL_LENGTH / 2 ]));
814: }
1.25 cvs 815: }
816:
817:
818: /*----------------------------------------------------------------------
819: scan
820: Scan a filename for its consituents
821: -----------------------------------
822:
823: On entry,
824: name points to a document name which may be incomplete.
825: On exit,
826: absolute or relative may be nonzero (but not both).
827: host, fragment and access may be nonzero if they were specified.
828: Any which are nonzero point to zero terminated strings.
829: ----------------------------------------------------------------------*/
830: #ifdef __STDC__
831: static void scan (char * name, HTURI * parts)
832: #else /* __STDC__ */
833: static void scan (name, parts)
834: char *name;
835: HTURI *parts;
836:
837: #endif /* __STDC__ */
838: {
1.43 cvs 839: char *p;
840: char *after_access = name;
1.32 cvs 841:
1.43 cvs 842: memset (parts, '\0', sizeof (HTURI));
1.28 cvs 843: /* Look for fragment identifier */
844: if ((p = strrchr(name, '#')) != NULL)
845: {
846: *p++ = '\0';
847: parts->fragment = p;
1.25 cvs 848: }
849:
1.28 cvs 850: for (p=name; *p; p++)
851: {
1.43 cvs 852: if (*p == URL_SEP || *p == DIR_SEP || *p=='#' || *p=='?')
1.28 cvs 853: break;
1.32 cvs 854: if (*p==':')
1.28 cvs 855: {
856: *p = 0;
857: parts->access = after_access; /* Scheme has been specified */
858:
859: /* The combination of gcc, the "-O" flag and the HP platform is
860: unhealthy. The following three lines is a quick & dirty fix, but is
861: not recommended. Rather, turn off "-O". */
862:
863: /* after_access = p;*/
864: /* while (*after_access == 0)*/
865: /* after_access++;*/
866: after_access = p+1;
1.43 cvs 867: if (!strcasecmp("URL", parts->access))
1.28 cvs 868: /* Ignore IETF's URL: pre-prefix */
869: parts->access = NULL;
870: else
1.25 cvs 871: break;
872: }
873: }
874:
875: p = after_access;
1.43 cvs 876: if (*p == URL_SEP || *p == DIR_SEP)
1.28 cvs 877: {
1.43 cvs 878: if (p[1] == URL_SEP)
1.28 cvs 879: {
1.25 cvs 880: parts->host = p+2; /* host has been specified */
1.28 cvs 881: *p = 0; /* Terminate access */
882: /* look for end of host name if any */
1.43 cvs 883: p = strchr (parts->host, URL_SEP);
1.28 cvs 884: if (p)
885: {
1.43 cvs 886: *p = EOS; /* Terminate host */
1.25 cvs 887: parts->absolute = p+1; /* Root has been found */
1.28 cvs 888: }
889: }
890: else
891: /* Root found but no host */
892: parts->absolute = p+1;
893: }
894: else
895: {
1.25 cvs 896: parts->relative = (*after_access) ? after_access : 0; /* zero for "" */
1.28 cvs 897: }
1.25 cvs 898: }
899:
900:
901: /*----------------------------------------------------------------------
1.28 cvs 902: AmayaParseUrl: parse a Name relative to another name
903:
904: This returns those parts of a name which are given (and requested)
905: substituting bits from the related name where necessary.
1.25 cvs 906:
1.28 cvs 907: On entry,
1.25 cvs 908: aName A filename given
909: relatedName A name relative to which aName is to be parsed. Give
910: it an empty string if aName is absolute.
911: wanted A mask for the bits which are wanted.
912:
1.28 cvs 913: On exit,
1.25 cvs 914: returns A pointer to a malloc'd string which MUST BE FREED
915: ----------------------------------------------------------------------*/
916: #ifdef __STDC__
1.34 cvs 917: char *AmayaParseUrl (const char *aName, char *relatedName, int wanted)
1.25 cvs 918: #else /* __STDC__ */
1.28 cvs 919: char *AmayaParseUrl (aName, relatedName, wanted)
1.34 cvs 920: const char *aName;
1.28 cvs 921: char *relatedName;
922: int wanted;
1.25 cvs 923:
924: #endif /* __STDC__ */
925: {
1.29 cvs 926: char *return_value;
927: char result[MAX_LENGTH];
928: char name[MAX_LENGTH];
929: char rel[MAX_LENGTH];
930: char *p, *access;
931: HTURI given, related;
932: int len;
1.33 cvs 933: char used_sep;
934: char *used_str;
1.32 cvs 935:
1.43 cvs 936: if (strchr (aName, DIR_SEP) || strchr (relatedName, DIR_SEP))
1.33 cvs 937: {
1.42 cvs 938: used_str = DIR_STR;
939: used_sep = DIR_SEP;
1.33 cvs 940: }
1.32 cvs 941: else
1.33 cvs 942: {
1.42 cvs 943: used_str = URL_STR;
944: used_sep = URL_SEP;
1.33 cvs 945: }
1.32 cvs 946:
1.29 cvs 947: /* Make working copies of input strings to cut up: */
948: return_value = NULL;
949: result[0] = 0; /* Clear string */
950: strcpy (name, aName);
951: if (relatedName != NULL)
952: strcpy (rel, relatedName);
953: else
954: relatedName[0] = EOS;
955:
956: scan (name, &given);
957: scan (rel, &related);
958: access = given.access ? given.access : related.access;
959: if (wanted & AMAYA_PARSE_ACCESS)
960: if (access)
961: {
962: strcat (result, access);
963: if(wanted & AMAYA_PARSE_PUNCTUATION)
1.32 cvs 964: strcat (result, ":");
1.29 cvs 965: }
966:
967: if (given.access && related.access)
968: /* If different, inherit nothing. */
969: if (strcmp (given.access, related.access) != 0)
970: {
971: related.host = 0;
972: related.absolute = 0;
973: related.relative = 0;
974: related.fragment = 0;
975: }
976:
977: if (wanted & AMAYA_PARSE_HOST)
978: if(given.host || related.host)
979: {
980: if(wanted & AMAYA_PARSE_PUNCTUATION)
981: strcat (result, "//");
982: strcat (result, given.host ? given.host : related.host);
983: }
984:
985: if (given.host && related.host)
986: /* If different hosts, inherit no path. */
987: if (strcmp(given.host, related.host) != 0)
988: {
989: related.absolute = 0;
990: related.relative = 0;
991: related.fragment = 0;
992: }
993:
994: if (wanted & AMAYA_PARSE_PATH)
995: {
996: if (given.absolute)
997: {
998: /* All is given */
999: if (wanted & AMAYA_PARSE_PUNCTUATION)
1.33 cvs 1000: strcat (result, used_str);
1.29 cvs 1001: strcat (result, given.absolute);
1.25 cvs 1002: }
1.29 cvs 1003: else if (related.absolute)
1004: {
1005: /* Adopt path not name */
1.33 cvs 1006: strcat (result, used_str);
1.29 cvs 1007: strcat (result, related.absolute);
1008: if (given.relative)
1009: {
1010: /* Search part? */
1011: p = strchr (result, '?');
1012: if (!p)
1013: p=result+strlen(result)-1;
1.33 cvs 1014: for (; *p!=used_sep; p--); /* last / */
1.29 cvs 1015: /* Remove filename */
1016: p[1]=0;
1017: /* Add given one */
1018: strcat (result, given.relative);
1019: /*SimplifyUrl (&result);*/
1.25 cvs 1020: }
1021: }
1.29 cvs 1022: else if (given.relative)
1023: /* what we've got */
1024: strcat (result, given.relative);
1025: else if (related.relative)
1026: strcat (result, related.relative);
1027: else
1028: /* No inheritance */
1.33 cvs 1029: strcat (result, used_str);
1.25 cvs 1030: }
1.29 cvs 1031:
1032: if (wanted & AMAYA_PARSE_ANCHOR)
1033: if (given.fragment || related.fragment)
1034: {
1035: if (given.absolute && given.fragment)
1036: {
1037: /*Fixes for relURLs...*/
1038: if (wanted & AMAYA_PARSE_PUNCTUATION)
1039: strcat (result, "#");
1040: strcat (result, given.fragment);
1041: }
1042: else if (!(given.absolute) && !(given.fragment))
1043: strcat (result, "");
1044: else
1045: {
1046: if (wanted & AMAYA_PARSE_PUNCTUATION)
1047: strcat (result, "#");
1048: strcat (result, given.fragment ? given.fragment : related.fragment);
1049: }
1050: }
1051: len = strlen (result);
1052: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
1053: strcpy (return_value, result);
1054: return (return_value); /* exactly the right length */
1.25 cvs 1055: }
1056:
1057: /*----------------------------------------------------------------------
1058: HTCanon
1059: Canonicalizes the URL in the following manner starting from the host
1060: pointer:
1061:
1062: 1) The host name is converted to lowercase
1063: 2) Chop off port if `:80' (http), `:70' (gopher), or `:21' (ftp)
1064:
1065: Return: OK The position of the current path part of the URL
1066: which might be the old one or a new one.
1067:
1068: ----------------------------------------------------------------------*/
1069: #ifdef __STDC__
1.28 cvs 1070: static char *HTCanon (char ** filename, char * host)
1.25 cvs 1071: #else /* __STDC__ */
1.28 cvs 1072: static char *HTCanon (filename, host)
1073: char **filename;
1074: char *host;
1.25 cvs 1075: #endif /* __STDC__ */
1076: {
1077: char *newname = NULL;
1078: char *port;
1079: char *strptr;
1080: char *path;
1081: char *access = host-3;
1.33 cvs 1082: char used_sep;
1.32 cvs 1083:
1084:
1.33 cvs 1085: if (*filename && strchr (*filename, URL_SEP))
1086: {
1087: used_sep = URL_SEP;
1088: }
1089: else
1090: {
1091: used_sep = DIR_SEP;
1092: }
1.32 cvs 1093:
1.33 cvs 1094: while (access>*filename && *(access-1)!= used_sep) /* Find access method */
1.25 cvs 1095: access--;
1.33 cvs 1096: if ((path = strchr(host, used_sep)) == NULL) /* Find path */
1.25 cvs 1097: path = host + strlen(host);
1098: if ((strptr = strchr(host, '@')) != NULL && strptr<path) /* UserId */
1099: host = strptr;
1.32 cvs 1100: if ((port = strchr(host, ':')) != NULL && port>path) /* Port number */
1.25 cvs 1101: port = NULL;
1102:
1103: strptr = host; /* Convert to lower-case */
1.33 cvs 1104: while (strptr<path)
1105: {
1.25 cvs 1106: *strptr = tolower(*strptr);
1107: strptr++;
1.33 cvs 1108: }
1.25 cvs 1109:
1110: /* Does the URL contain a full domain name? This also works for a
1111: numerical host name. The domain name is already made lower-case
1112: and without a trailing dot. */
1113: {
1.33 cvs 1114: char *dot = port ? port : path;
1115: if (dot > *filename && *--dot=='.')
1116: {
1117: char *orig=dot, *dest=dot+1;
1118: while((*orig++ = *dest++));
1119: if (port) port--;
1120: path--;
1.25 cvs 1121: }
1122: }
1123: /* Chop off port if `:', `:80' (http), `:70' (gopher), or `:21' (ftp) */
1.33 cvs 1124: if (port)
1125: {
1126: if (!*(port+1) || *(port+1)==used_sep)
1127: {
1128: if (!newname)
1129: {
1.25 cvs 1130: char *orig=port, *dest=port+1;
1131: while((*orig++ = *dest++));
1.33 cvs 1132: }
1133: }
1134: else if ((!strncmp(access, "http", 4) &&
1135: (*(port+1)=='8'&&*(port+2)=='0'&&(*(port+3)==used_sep||!*(port+3)))) ||
1136: (!strncmp(access, "gopher", 6) &&
1137: (*(port+1)=='7'&&*(port+2)=='0'&&(*(port+3)==used_sep||!*(port+3)))) ||
1138: (!strncmp(access, "ftp", 3) &&
1139: (*(port+1)=='2'&&*(port+2)=='1'&&(*(port+3)==used_sep||!*(port+3))))) {
1140: if (!newname)
1141: {
1142: char *orig=port, *dest=port+3;
1143: while((*orig++ = *dest++));
1144: /* Update path position, Henry Minsky */
1145: path -= 3;
1.25 cvs 1146: }
1.33 cvs 1147: }
1148: else if (newname)
1149: strncat(newname, port, (int) (path-port));
1150: }
1.25 cvs 1151:
1.33 cvs 1152: if (newname)
1153: {
1.25 cvs 1154: char *newpath = newname+strlen(newname);
1155: strcat(newname, path);
1156: path = newpath;
1.28 cvs 1157: /* Free old copy */
1158: TtaFreeMemory(*filename);
1.25 cvs 1159: *filename = newname;
1.33 cvs 1160: }
1.25 cvs 1161: return path;
1162: }
1163:
1164:
1165: /*----------------------------------------------------------------------
1.29 cvs 1166: SimplifyUrl: simplify a URI
1.32 cvs 1167: A URI is allowed to contain the sequence xxx/../ which may be
1168: replaced by "" , and the sequence "/./" which may be replaced by DIR_STR.
1.28 cvs 1169: Simplification helps us recognize duplicate URIs.
1.25 cvs 1170:
1.28 cvs 1171: Thus, /etc/junk/../fred becomes /etc/fred
1172: /etc/junk/./fred becomes /etc/junk/fred
1.25 cvs 1173:
1.28 cvs 1174: but we should NOT change
1175: http://fred.xxx.edu/../..
1.25 cvs 1176:
1177: or ../../albert.html
1178:
1.28 cvs 1179: In order to avoid empty URLs the following URLs become:
1.25 cvs 1180:
1181: /fred/.. becomes /fred/..
1182: /fred/././.. becomes /fred/..
1183: /fred/.././junk/.././ becomes /fred/..
1184:
1.28 cvs 1185: If more than one set of `://' is found (several proxies in cascade) then
1186: only the part after the last `://' is simplified.
1.25 cvs 1187:
1.28 cvs 1188: Returns: A string which might be the old one or a new one.
1.25 cvs 1189: ----------------------------------------------------------------------*/
1190: #ifdef __STDC__
1.29 cvs 1191: void SimplifyUrl (char ** url)
1.25 cvs 1192: #else /* __STDC__ */
1.29 cvs 1193: void SimplifyUrl (url)
1.28 cvs 1194: char **url;
1.25 cvs 1195: #endif /* __STDC__ */
1196: {
1.28 cvs 1197: char *path, *p;
1198: char *newptr, *access;
1199: char *orig, *dest, *end;
1200:
1.33 cvs 1201: char used_sep;
1.32 cvs 1202:
1203:
1.28 cvs 1204: if (!url || !*url)
1205: return;
1206:
1.33 cvs 1207: if (strchr (*url, URL_SEP))
1208: {
1209: used_sep = URL_SEP;
1210: }
1.32 cvs 1211: else
1.33 cvs 1212: {
1213: used_sep = DIR_SEP;
1214: }
1.32 cvs 1215:
1.28 cvs 1216: /* Find any scheme name */
1217: if ((path = strstr(*url, "://")) != NULL)
1.33 cvs 1218: {
1219: /* Find host name */
1.28 cvs 1220: access = *url;
1221: while (access<path && (*access=tolower(*access)))
1222: access++;
1223: path += 3;
1224: while ((newptr = strstr(path, "://")) != NULL)
1225: /* For proxies */
1226: path = newptr+3;
1227: /* We have a host name */
1228: path = HTCanon(url, path);
1.25 cvs 1229: }
1.28 cvs 1230: else if ((path = strstr(*url, ":/")) != NULL)
1231: path += 2;
1232: else
1233: path = *url;
1.25 cvs 1234:
1.33 cvs 1235: if (*path == used_sep && *(path+1)==used_sep)
1.28 cvs 1236: /* Some URLs start //<foo> */
1237: path += 1;
1238: else if (!strncmp(path, "news:", 5))
1239: {
1240: newptr = strchr(path+5, '@');
1241: if (!newptr)
1242: newptr = path + 5;
1243: while (*newptr)
1244: {
1245: /* Make group or host lower case */
1246: *newptr = tolower (*newptr);
1247: newptr++;
1.25 cvs 1248: }
1.28 cvs 1249: /* Doesn't need to do any more */
1250: return;
1.25 cvs 1251: }
1.28 cvs 1252:
1253: if ((p = path))
1254: {
1255: if (!((end = strchr (path, ';')) || (end = strchr (path, '?')) ||
1256: (end = strchr (path, '#'))))
1257: end = path + strlen (path);
1258:
1259: /* Parse string second time to simplify */
1260: p = path;
1261: while (p < end)
1262: {
1.33 cvs 1263: if (*p==used_sep)
1.28 cvs 1264: {
1.33 cvs 1265: if (p > *url && *(p+1) == '.' && (*(p+2) == used_sep || !*(p+2)))
1.28 cvs 1266: {
1267: orig = p + 1;
1.33 cvs 1268: dest = (*(p+2)!=used_sep) ? p+2 : p+3;
1.28 cvs 1269: while ((*orig++ = *dest++)); /* Remove a slash and a dot */
1270: end = orig - 1;
1271: }
1.33 cvs 1272: else if (*(p+1)=='.' && *(p+2)=='.' && (*(p+3)==used_sep || !*(p+3)))
1.28 cvs 1273: {
1274: newptr = p;
1.33 cvs 1275: while (newptr>path && *--newptr!=used_sep); /* prev slash */
1.28 cvs 1276: if (strncmp(newptr, "/../", 4))
1277: {
1278: orig = newptr + 1;
1.33 cvs 1279: dest = (*(p+3)!=used_sep) ? p+3 : p+4;
1.28 cvs 1280: while ((*orig++ = *dest++)); /* Remove /xxx/.. */
1281: end = orig-1;
1282: /* Start again with prev slash */
1283: p = newptr;
1.25 cvs 1284: }
1.28 cvs 1285: else
1.25 cvs 1286: p++;
1.28 cvs 1287: }
1.33 cvs 1288: else if (*(p+1) == used_sep)
1.28 cvs 1289: {
1.33 cvs 1290: while (*(p+1) == used_sep)
1.28 cvs 1291: {
1292: orig = p;
1293: dest = p + 1;
1294: while ((*orig++ = *dest++)); /* Remove multiple /'s */
1295: end = orig-1;
1296: }
1297: }
1298: else
1.25 cvs 1299: p++;
1.28 cvs 1300: }
1301: else
1302: p++;
1.25 cvs 1303: }
1304: }
1.28 cvs 1305: return;
1306: }
1307:
1308:
1309: /*----------------------------------------------------------------------
1310: NormalizeFile normalizes local names.
1311: Return TRUE if target and src differ.
1312: ----------------------------------------------------------------------*/
1313: #ifdef __STDC__
1314: boolean NormalizeFile (char *src, char *target)
1315: #else
1316: boolean NormalizeFile (src, target)
1317: char *src;
1318: char *target;
1319:
1320: #endif
1321: {
1322: char *s;
1323: boolean change;
1324:
1325: change = FALSE;
1326: if (src[0] == '~')
1327: {
1328: /* replace ~ */
1329: s = (char *) TtaGetEnvString ("HOME");
1330: strcpy (target, s);
1331: strcat (target, &src[1]);
1332: change = TRUE;
1333: }
1334: else if (strncmp (src, "file:", 5) == 0)
1335: {
1336: /* remove the prefix file: */
1337: if (src[5] == EOS)
1338: strcpy (target, DIR_STR);
1339: else if (src[0] == '~')
1340: {
1341: /* replace ~ */
1342: s = (char *) TtaGetEnvString ("HOME");
1343: strcpy (target, s);
1344: strcat (target, &src[5]);
1345: }
1346: else
1347: strcpy (target, &src[5]);
1348: change = TRUE;
1349: }
1350: else
1351: strcpy (target, src);
1352:
1353: /* remove /../ and /./ */
1.29 cvs 1354: SimplifyUrl (&target);
1.28 cvs 1355: return (change);
1.25 cvs 1356: }
1357:
1.28 cvs 1358:
1.25 cvs 1359: /*----------------------------------------------------------------------
1.31 cvs 1360: MakeRelativeURL: make relative name
1.25 cvs 1361:
1.28 cvs 1362: This function creates and returns a string which gives an expression of
1363: one address as related to another. Where there is no relation, an absolute
1364: address is retured.
1.25 cvs 1365:
1.28 cvs 1366: On entry,
1.25 cvs 1367: Both names must be absolute, fully qualified names of nodes
1368: (no fragment bits)
1369:
1.28 cvs 1370: On exit,
1.25 cvs 1371: The return result points to a newly allocated name which, if
1372: parsed by AmayaParseUrl relative to relatedName, will yield aName.
1373: The caller is responsible for freeing the resulting name later.
1374: ----------------------------------------------------------------------*/
1375: #ifdef __STDC__
1.31 cvs 1376: char *MakeRelativeURL (char *aName, char *relatedName)
1.25 cvs 1377: #else /* __STDC__ */
1.31 cvs 1378: char *MakeRelativeURL (aName, relatedName)
1.28 cvs 1379: char *aName;
1380: char *relatedName;
1.25 cvs 1381: #endif /* __STDC__ */
1382: {
1.39 cvs 1383: char *return_value;
1384: char result[MAX_LENGTH];
1.29 cvs 1385: char *p;
1.34 cvs 1386: char *q;
1.29 cvs 1387: char *after_access;
1388: char *last_slash = NULL;
1389: int slashes, levels, len;
1390:
1.44 cvs 1391: # ifdef _WINDOWS
1392: int ndx;
1393: # endif /* _WINDOWS */
1394:
1.29 cvs 1395: if (aName == NULL || relatedName == NULL)
1396: return (NULL);
1397:
1398: slashes = 0;
1399: after_access = NULL;
1400: p = aName;
1401: q = relatedName;
1402: for (; *p && (*p == *q); p++, q++)
1.27 cvs 1403: {
1404: /* Find extent of match */
1.32 cvs 1405: if (*p == ':')
1.29 cvs 1406: after_access = p + 1;
1.28 cvs 1407: if (*p == DIR_SEP)
1.27 cvs 1408: {
1.29 cvs 1409: /* memorize the last slash position and count them */
1.27 cvs 1410: last_slash = p;
1411: slashes++;
1.25 cvs 1412: }
1413: }
1414:
1.31 cvs 1415: /* q, p point to the first non-matching character or zero */
1416: if (*q == EOS)
1417: {
1418: /* New name is a subset of the related name */
1419: /* exactly the right length */
1420: len = strlen (p);
1421: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
1422: strcpy (return_value, p);
1423: }
1424: else if ((slashes < 2 && after_access == NULL)
1425: || (slashes < 3 && after_access != NULL))
1426: {
1427: /* Two names whitout common path */
1428: /* exactly the right length */
1429: len = strlen (aName);
1430: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
1431: strcpy (return_value, aName);
1432: }
1433: else
1434: {
1435: /* Some path in common */
1436: if (slashes == 3 && strncmp (aName, "http:", 5) == 0)
1437: /* just the same server */
1438: strcpy (result, last_slash);
1439: else
1440: {
1441: levels= 0;
1442: for (; *q && (*q != '#'); q++)
1443: if (*q == DIR_SEP)
1444: levels++;
1445:
1446: result[0] = 0;
1447: for (;levels; levels--)
1448: strcat (result, "../");
1449: strcat (result, last_slash+1);
1450: }
1451:
1452: /* exactly the right length */
1453: len = strlen (result);
1454: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
1455: strcpy (return_value, result);
1.25 cvs 1456: }
1.44 cvs 1457: # ifdef _WINDOWS
1458: len = strlen (return_value);
1459: for (ndx = 0; ndx < len; ndx ++)
1460: if (return_value[ndx] == '\\')
1461: return_value[ndx] = '/' ;
1462: # endif /* _WINDOWS */
1.29 cvs 1463: return (return_value);
1.24 cvs 1464: }
1.35 cvs 1465:
1466:
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