Annotation of Amaya/amaya/AHTURLTools.c, revision 1.35
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
14: *
15: */
1.7 cvs 16:
1.15 cvs 17: #define THOT_EXPORT extern
1.3 cvs 18: #include "amaya.h"
19:
1.8 cvs 20: #include "init_f.h"
21: #include "AHTURLTools_f.h"
22:
1.24 cvs 23: #define MAX_PRINT_URL_LENGTH 50
1.29 cvs 24: typedef struct _HTURI {
25: char * access; /* Now known as "scheme" */
26: char * host;
27: char * absolute;
28: char * relative;
29: char * fragment;
30: } HTURI;
1.24 cvs 31:
1.28 cvs 32:
33: /*----------------------------------------------------------------------
34: ConvertToLowerCase
35: Converts a string to lowercase.
36: ----------------------------------------------------------------------*/
1.22 cvs 37: #ifdef __STDC__
1.28 cvs 38: static void ConvertToLowerCase (char *string)
39: #else /* __STDC__ */
40: static void ConvertToLowerCase (string)
41: char *string;
42:
43: #endif /* __STDC__ */
44: {
45: int i;
46:
47: if (!string)
48: return;
49:
50: for (i = 0; string[i] != EOS; i++)
51: string[i] = tolower (string[i]);
52: }
1.22 cvs 53:
1.8 cvs 54: /*----------------------------------------------------------------------
1.11 cvs 55: ExplodeURL
1.8 cvs 56: ----------------------------------------------------------------------*/
57: #ifdef __STDC__
58: void ExplodeURL (char *url, char **proto, char **host, char **dir, char **file)
59: #else
60: void ExplodeURL (url, proto, host, dir, file)
61: char *url;
62: char **proto;
63: char **host;
64: char **dir;
65: char **file;
66:
67: #endif
68: {
1.33 cvs 69: char *curr, *temp;
70: char used_sep;
1.32 cvs 71:
1.33 cvs 72: if (url && strchr (url, URL_SEP))
73: used_sep = URL_SEP;
74: else
75: used_sep = DIR_SEP;
1.8 cvs 76:
77: if ((url == NULL) || (proto == NULL) || (host == NULL) ||
78: (dir == NULL) || (file == NULL))
79: return;
80:
81: /* initialize every pointer */
82: *proto = *host = *dir = *file = NULL;
83:
84: /* skip any leading space */
85: while ((*url == SPACE) || (*url == TAB))
86: url++;
1.9 cvs 87: curr = url;
88: if (*curr == 0)
1.8 cvs 89: goto finished;
90:
91: /* go to the end of the URL */
1.9 cvs 92: while ((*curr != 0) && (*curr != SPACE) && (*curr != '\b') &&
93: (*curr != '\r') && (*curr != EOL))
94: curr++;
1.8 cvs 95:
96: /* mark the end of the chain */
1.9 cvs 97: *curr = EOS;
98: curr--;
99: if (curr <= url)
1.8 cvs 100: goto finished;
101:
102: /* search the next DIR_SEP indicating the beginning of the file name */
103: do
1.11 cvs 104: curr--;
1.33 cvs 105: while ((curr >= url) && (*curr != used_sep));
1.11 cvs 106:
1.9 cvs 107: if (curr < url)
1.8 cvs 108: goto finished;
1.9 cvs 109: *file = curr + 1;
1.8 cvs 110:
111: /* mark the end of the dir */
1.9 cvs 112: *curr = EOS;
113: curr--;
114: if (curr < url)
1.8 cvs 115: goto finished;
116:
1.29 cvs 117: /* search for the DIR_STR indicating the host name start */
1.33 cvs 118: while ((curr > url) && ((*curr != used_sep) || (*(curr + 1) != used_sep)))
1.9 cvs 119: curr--;
1.8 cvs 120:
121: /* if we found it, separate the host name from the directory */
1.33 cvs 122: if ((*curr == DIR_SEP) && (*(curr + 1) == used_sep))
1.8 cvs 123: {
1.9 cvs 124: *host = temp = curr + 2;
1.33 cvs 125: while ((*temp != 0) && (*temp != used_sep))
1.8 cvs 126: temp++;
1.33 cvs 127: if (*temp == used_sep)
1.8 cvs 128: {
129: *temp = EOS;
130: *dir = temp + 1;
131: }
132: }
133: else
1.11 cvs 134: *dir = curr;
135:
1.9 cvs 136: if (curr <= url)
1.8 cvs 137: goto finished;
138:
139: /* mark the end of the proto */
1.9 cvs 140: *curr = EOS;
141: curr--;
142: if (curr < url)
1.8 cvs 143: goto finished;
144:
1.32 cvs 145: if (*curr == ':')
1.8 cvs 146: {
1.9 cvs 147: *curr = EOS;
148: curr--;
1.8 cvs 149: }
150: else
151: goto finished;
1.11 cvs 152:
1.9 cvs 153: if (curr < url)
1.8 cvs 154: goto finished;
1.9 cvs 155: while ((curr > url) && (isalpha (*curr)))
156: curr--;
157: *proto = curr;
1.8 cvs 158:
159: finished:;
160:
161: #ifdef AMAYA_DEBUG
162: fprintf (stderr, "ExplodeURL(%s)\n\t", url);
163: if (*proto)
164: fprintf (stderr, "proto : %s, ", *proto);
165: if (*host)
166: fprintf (stderr, "host : %s, ", *host);
167: if (*dir)
168: fprintf (stderr, "dir : %s, ", *dir);
169: if (*file)
170: fprintf (stderr, "file : %s ", *file);
171: fprintf (stderr, "\n");
172: #endif
173:
174: }
1.3 cvs 175:
1.4 cvs 176: /*----------------------------------------------------------------------
1.9 cvs 177: IsHTMLName
178: returns TRUE if path points to an HTML resource.
1.4 cvs 179: ----------------------------------------------------------------------*/
1.3 cvs 180: #ifdef __STDC__
1.34 cvs 181: boolean IsHTMLName (const char *path)
1.3 cvs 182: #else /* __STDC__ */
183: boolean IsHTMLName (path)
1.34 cvs 184: const char *path;
1.3 cvs 185: #endif /* __STDC__ */
186: {
1.5 cvs 187: char temppath[MAX_LENGTH];
188: char suffix[MAX_LENGTH];
189: char nsuffix[MAX_LENGTH];
190: int i;
191:
192: if (!path)
1.13 cvs 193: return (FALSE);
1.5 cvs 194:
195: strcpy (temppath, path);
196: ExtractSuffix (temppath, suffix);
197:
198: /* Normalize the suffix */
199: i = 0;
200: while (suffix[i] != EOS)
1.13 cvs 201: {
1.25 cvs 202: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 203: i++;
204: }
1.5 cvs 205: nsuffix[i] = EOS;
206: if ((strcmp (nsuffix, "html")) &&
207: (strcmp (nsuffix, "htm")) &&
208: (strcmp (nsuffix, "shtml")))
1.13 cvs 209: return (FALSE);
1.22 cvs 210: else if (!strcmp (nsuffix, "gz"))
1.13 cvs 211: {
212: /* take in account compressed files */
213: ExtractSuffix (temppath, suffix);
214: /* Normalize the suffix */
215: i = 0;
216: while (suffix[i] != EOS)
217: {
1.25 cvs 218: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 219: i++;
220: }
221: nsuffix[i] = EOS;
222: if ((strcmp (nsuffix, "html")) &&
223: (strcmp (nsuffix, "htm")) &&
224: (strcmp (nsuffix, "shtml")))
225: return (FALSE);
226: else
227: return (TRUE);
228: }
229: else
230: return (TRUE);
1.3 cvs 231: }
232:
1.4 cvs 233: /*----------------------------------------------------------------------
1.9 cvs 234: IsImageName
235: returns TRUE if path points to an image resource.
1.4 cvs 236: ----------------------------------------------------------------------*/
1.3 cvs 237: #ifdef __STDC__
1.34 cvs 238: boolean IsImageName (const char *path)
1.3 cvs 239: #else /* __STDC__ */
240: boolean IsImageName (path)
1.34 cvs 241: const char *path;
1.3 cvs 242: #endif /* __STDC__ */
243: {
1.5 cvs 244: char temppath[MAX_LENGTH];
245: char suffix[MAX_LENGTH];
246: char nsuffix[MAX_LENGTH];
247: int i;
248:
249: if (!path)
1.13 cvs 250: return (FALSE);
1.5 cvs 251:
252: strcpy (temppath, path);
253: ExtractSuffix (temppath, suffix);
254:
255: /* Normalize the suffix */
256: i = 0;
257: while (suffix[i] != EOS)
1.13 cvs 258: {
1.25 cvs 259: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 260: i++;
261: }
1.5 cvs 262: nsuffix[i] = EOS;
263: if ((strcmp (nsuffix, "gif")) && (strcmp (nsuffix, "xbm")) &&
264: (strcmp (nsuffix, "xpm")) && (strcmp (nsuffix, "jpg")) &&
265: (strcmp (nsuffix, "png")) && (strcmp (nsuffix, "au")))
1.13 cvs 266: return (FALSE);
267: return (TRUE);
1.3 cvs 268: }
269:
1.4 cvs 270: /*----------------------------------------------------------------------
1.9 cvs 271: IsTextName
1.4 cvs 272: ----------------------------------------------------------------------*/
1.3 cvs 273: #ifdef __STDC__
1.34 cvs 274: boolean IsTextName (const char *path)
1.3 cvs 275: #else /* __STDC__ */
276: boolean IsTextName (path)
1.34 cvs 277: const char *path;
1.3 cvs 278:
279: #endif /* __STDC__ */
280: {
1.5 cvs 281: char temppath[MAX_LENGTH];
282: char suffix[MAX_LENGTH];
283: char nsuffix[MAX_LENGTH];
284: int i;
285:
286: if (!path)
1.13 cvs 287: return (FALSE);
1.5 cvs 288:
289: strcpy (temppath, path);
290: ExtractSuffix (temppath, suffix);
291:
292: /* Normalize the suffix */
293: i = 0;
294: while (suffix[i] != EOS)
295: {
1.25 cvs 296: nsuffix[i] = tolower (suffix[i]);
1.5 cvs 297: i++;
298: }
299: nsuffix[i] = EOS;
300:
301: if ((strcmp (nsuffix, "gif")) && (strcmp (nsuffix, "xbm")) &&
302: (strcmp (nsuffix, "xpm")) && (strcmp (nsuffix, "jpg")) &&
303: (strcmp (nsuffix, "pdf")) && (strcmp (nsuffix, "png")) &&
1.22 cvs 304: (strcmp (nsuffix, "tgz")) && (strcmp (nsuffix, "tar")) &&
305: (strcmp (nsuffix, "xpg")) && (strcmp (nsuffix, "xpd")) &&
306: (strcmp (nsuffix, "ps")) && (strcmp (nsuffix, "au")))
1.13 cvs 307: return (TRUE);
1.22 cvs 308: else if (!strcmp (nsuffix, "gz"))
1.13 cvs 309: {
310: /* take in account compressed files */
311: ExtractSuffix (temppath, suffix);
312: /* Normalize the suffix */
313: i = 0;
314: while (suffix[i] != EOS)
315: {
1.25 cvs 316: nsuffix[i] = tolower (suffix[i]);
1.13 cvs 317: i++;
318: }
319: nsuffix[i] = EOS;
320: if ((!strcmp (nsuffix, "html")) ||
321: (!strcmp (nsuffix, "htm")) ||
322: (!strcmp (nsuffix, "shtml")))
323: return (TRUE);
324: else
325: return (FALSE);
326: }
327: else
328: return (FALSE);
1.3 cvs 329: }
330:
1.4 cvs 331: /*----------------------------------------------------------------------
1.9 cvs 332: IsHTTPPath
333: returns TRUE if path is in fact an http URL.
1.4 cvs 334: ----------------------------------------------------------------------*/
1.3 cvs 335: #ifdef __STDC__
1.34 cvs 336: boolean IsHTTPPath (const char *path)
1.3 cvs 337: #else /* __STDC__ */
338: boolean IsHTTPPath (path)
1.34 cvs 339: const char *path;
1.3 cvs 340: #endif /* __STDC__ */
341: {
1.5 cvs 342: if (!path)
343: return FALSE;
1.3 cvs 344:
1.5 cvs 345: if (strncmp (path, "http:", 5) != 0)
346: return FALSE;
347: return TRUE;
1.3 cvs 348: }
349:
1.4 cvs 350: /*----------------------------------------------------------------------
1.9 cvs 351: IsWithParameters
352: returns TRUE if url has a concatenated query string.
1.4 cvs 353: ----------------------------------------------------------------------*/
1.3 cvs 354: #ifdef __STDC__
1.34 cvs 355: boolean IsWithParameters (const char *url)
1.3 cvs 356: #else /* __STDC__ */
1.9 cvs 357: boolean IsWithParameters (url)
1.34 cvs 358: const char *url;
1.3 cvs 359: #endif /* __STDC__ */
360: {
1.5 cvs 361: int i;
1.3 cvs 362:
1.9 cvs 363: if ((!url) || (url[0] == EOS))
1.5 cvs 364: return FALSE;
1.3 cvs 365:
1.9 cvs 366: i = strlen (url) - 1;
367: while (i > 0 && url[i--] != '?')
1.5 cvs 368: if (i < 0)
369: return FALSE;
1.3 cvs 370:
1.5 cvs 371: /* There is a parameter */
372: return TRUE;
1.3 cvs 373: }
374:
1.4 cvs 375: /*----------------------------------------------------------------------
1.9 cvs 376: IsW3Path
377: returns TRUE if path is in fact a URL.
1.4 cvs 378: ----------------------------------------------------------------------*/
1.3 cvs 379: #ifdef __STDC__
1.34 cvs 380: boolean IsW3Path (const char *path)
1.3 cvs 381: #else /* __STDC__ */
382: boolean IsW3Path (path)
1.34 cvs 383: const char *path;
1.3 cvs 384: #endif /* __STDC__ */
385: {
1.5 cvs 386: if ((strncmp (path, "http:", 5)) && (strncmp (path, "ftp:", 4)) &&
387: (strncmp (path, "telnet:", 7)) && (strncmp (path, "wais:", 5)) &&
388: (strncmp (path, "news:", 5)) && (strncmp (path, "gopher:", 7)) &&
389: (strncmp (path, "mailto:", 7)) && (strncmp (path, "archie:", 7)))
390: return FALSE;
391: return TRUE;
1.3 cvs 392: }
393:
1.4 cvs 394: /*----------------------------------------------------------------------
1.9 cvs 395: IsValidProtocol
396: returns true if the url protocol is supported by Amaya.
1.4 cvs 397: ----------------------------------------------------------------------*/
1.3 cvs 398: #ifdef __STDC__
1.34 cvs 399: boolean IsValidProtocol (const char *url)
1.3 cvs 400: #else /* __STDC__ */
1.9 cvs 401: boolean IsValidProtocol (url)
1.34 cvs 402: const char *url;
1.3 cvs 403: #endif /* __STDC__ */
404: {
1.26 cvs 405: if (!strncmp (url, "http:", 5))
1.22 cvs 406: /* experimental */
1.26 cvs 407: /*** || !strncmp (url, "ftp:", 4)) ***/
1.24 cvs 408: /*** || !strncmp (path, "news:", 5)***/
1.8 cvs 409: return (TRUE);
1.5 cvs 410: else
1.8 cvs 411: return (FALSE);
1.3 cvs 412: }
413:
1.31 cvs 414:
415: /*----------------------------------------------------------------------
416: GetBaseURL
417: normalizes orgName according to a base associated with doc, and
418: following the standard URL format rules.
419: The function returns the base used to solve relative URL and SRC:
420: - the base of the document,
421: - or the document path (without document name).
422: ----------------------------------------------------------------------*/
423: #ifdef __STDC__
424: char *GetBaseURL (Document doc)
425: #else /* __STDC__ */
426: char *GetBaseURL (doc)
427: Document doc;
428: #endif /* __STDC__ */
429: {
430: Element el;
431: ElementType elType;
432: AttributeType attrType;
433: Attribute attr;
1.34 cvs 434: char used_sep = URL_SEP;
1.33 cvs 435: char *used_str;
1.31 cvs 436: char *ptr, *basename;
437: int length;
438:
439: basename = TtaGetMemory (MAX_LENGTH);
440: strcpy (basename, DocumentURLs[doc]);
441: length = MAX_LENGTH -1;
442: /* get the root element */
443: el = TtaGetMainRoot (doc);
444: /* search the BASE element */
445: elType.ElSSchema = TtaGetDocumentSSchema (doc);
446: elType.ElTypeNum = HTML_EL_BASE;
447: el = TtaSearchTypedElement (elType, SearchInTree, el);
448: if (el)
449: {
450: /* The document has a BASE element -> Get the HREF attribute */
451: attrType.AttrSSchema = elType.ElSSchema;
452: attrType.AttrTypeNum = HTML_ATTR_HREF_;
453: attr = TtaGetAttribute (el, attrType);
454: if (attr)
455: {
456: /* Use the base path of the document */
457: TtaGiveTextAttributeValue (attr, basename, &length);
458: /* base and orgName have to be separated by a DIR_SEP */
459: length--;
1.32 cvs 460:
1.33 cvs 461: if (basename [0] != EOS && strchr (basename, URL_SEP))
462: {
463: used_str = URL_STR;
464: used_sep = URL_SEP;
465: }
466: else
467: {
468: used_str = DIR_STR;
469: used_sep = DIR_SEP;
470: }
1.32 cvs 471:
1.33 cvs 472: if (basename[0] != EOS && basename[length] != used_sep)
1.31 cvs 473: /* verify if the base has the form "protocol://server:port" */
474: {
1.33 cvs 475: ptr = AmayaParseUrl (basename, "", AMAYA_PARSE_ACCESS |
476: AMAYA_PARSE_HOST |
477: AMAYA_PARSE_PUNCTUATION);
1.31 cvs 478: if (ptr && !strcmp (ptr, basename))
479: {
480: /* it has this form, we complete it by adding a DIR_STR */
1.33 cvs 481: strcat (basename, used_str);
1.31 cvs 482: length++;
483: }
484: if (ptr)
485: TtaFreeMemory (ptr);
486: }
487: }
1.33 cvs 488: }
1.32 cvs 489: else
1.33 cvs 490: {
491: if (basename [0] != EOS && strchr (basename, URL_SEP))
492: {
493: used_str = URL_STR;
494: used_sep = URL_SEP;
495: }
496: else
497: {
498: used_str = DIR_STR;
499: used_sep = DIR_SEP;
500: }
501: }
502:
1.31 cvs 503: /* Remove anything after the last DIR_SEP char. If no such char is found,
504: * then search for the first ":" char, hoping that what's before that is a
505: * protocol. If found, end the string there. If neither char is found,
506: * then discard the whole base element.
507: */
508: length = strlen (basename) - 1;
509: /* search for the last DIR_SEP char */
1.33 cvs 510: while (length >= 0 && basename[length] != used_sep)
1.31 cvs 511: length--;
512: if (length >= 0)
513: /* found the last DIR_SEP char, end the string there */
514: basename[length + 1] = EOS;
515: else
516: /* search for the first PATH_STR char */
517: {
1.32 cvs 518: for (length = 0; basename[length] != ':' &&
1.31 cvs 519: basename[length] != EOS; length ++);
1.32 cvs 520: if (basename[length] == ':')
1.31 cvs 521: /* found, so end the string there */
522: basename[length + 1] = EOS;
523: else
524: /* not found, discard the base */
525: basename[0] = EOS;
526: }
527: return (basename);
528: }
529:
530:
1.4 cvs 531: /*----------------------------------------------------------------------
1.9 cvs 532: NormalizeURL
533: normalizes orgName according to a base associated with doc, and
534: following the standard URL format rules.
535: The function returns the new complete and normalized URL
1.12 cvs 536: or file name path (newName) and the name of the document (docName).
1.9 cvs 537: N.B. If the function can't find out what's the docName, it assigns
538: the name "noname.html".
1.4 cvs 539: ----------------------------------------------------------------------*/
1.3 cvs 540: #ifdef __STDC__
541: void NormalizeURL (char *orgName, Document doc, char *newName, char *docName)
542: #else /* __STDC__ */
543: void NormalizeURL (orgName, doc, newName, docName)
544: char *orgName;
545: Document doc;
546: char *newName;
547: char *docName;
548: #endif /* __STDC__ */
549: {
1.31 cvs 550: char *basename;
1.18 cvs 551: char tempOrgName[MAX_LENGTH];
1.5 cvs 552: char *ptr;
553: int length;
1.33 cvs 554: char used_sep;
555: char *used_str;
1.5 cvs 556:
557: if (!newName || !docName)
558: return;
1.18 cvs 559:
1.32 cvs 560: if (doc != 0)
1.33 cvs 561: basename = GetBaseURL (doc);
1.32 cvs 562: else
1.33 cvs 563: basename = (char *) NULL;
1.32 cvs 564:
1.33 cvs 565: if (strchr (orgName, URL_SEP) || (basename && strchr (basename, URL_SEP)))
566: {
567: used_str = URL_STR;
568: used_sep = URL_SEP;
569: }
570: else
571: {
572: used_str = DIR_STR;
573: used_sep = DIR_SEP;
574: }
1.32 cvs 575:
1.18 cvs 576: /*
1.31 cvs 577: * Clean orgName
578: * Make sure we have a complete orgName, without any leading or trailing
579: * white spaces, or trailinbg new lines
580: */
1.18 cvs 581:
1.5 cvs 582: ptr = orgName;
1.18 cvs 583: /* skip leading white space and new line characters */
1.19 cvs 584: while ((*ptr == ' ' || *ptr == EOL) && *ptr++ != EOS);
1.18 cvs 585: strcpy (tempOrgName, ptr);
586: /* clean trailing white space */
587: ptr = strchr (tempOrgName, ' ');
588: if (ptr)
589: *ptr = EOS;
590: /* clean trailing new lines */
1.19 cvs 591: ptr = strchr (tempOrgName, EOL);
1.5 cvs 592: if (ptr)
593: *ptr = EOS;
594:
1.18 cvs 595: /*
1.31 cvs 596: * Make orgName a complete URL
597: * If the URL does not include a protocol, then try to calculate
598: * one using the doc's base element (if it exists),
599: */
1.21 cvs 600: if (tempOrgName[0] == EOS)
601: {
602: newName[0] = EOS;
603: return;
604: }
605: else if (IsW3Path (tempOrgName))
606: {
607: /* the name is complete, go to the Sixth Step */
608: strcpy (newName, tempOrgName);
609: /* verify if the URL has the form "protocol://server:port" */
1.25 cvs 610: ptr = AmayaParseUrl (newName, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST |
611: AMAYA_PARSE_PUNCTUATION);
1.21 cvs 612: if (ptr && !strcmp (ptr, newName))
613: {
1.29 cvs 614: /* it has this form, we complete it by adding a DIR_STR */
1.33 cvs 615: strcat (newName, used_str);
1.21 cvs 616: }
617: if (ptr)
1.25 cvs 618: TtaFreeMemory (ptr);
1.21 cvs 619: }
620: else if ( doc == 0)
1.19 cvs 621: /* the name is complete, go to the Sixth Step */
1.18 cvs 622: strcpy (newName, tempOrgName);
1.5 cvs 623: else
624: {
1.22 cvs 625:
1.31 cvs 626: /* Calculate the absolute URL, using the base or document URL */
1.32 cvs 627:
1.25 cvs 628: ptr = AmayaParseUrl (tempOrgName, basename, AMAYA_PARSE_ALL);
1.31 cvs 629: TtaFreeMemory (basename);
1.14 cvs 630: if (ptr)
631: {
1.29 cvs 632: SimplifyUrl (&ptr);
1.14 cvs 633: strcpy (newName, ptr);
1.25 cvs 634: TtaFreeMemory (ptr);
1.14 cvs 635: }
636: else
1.18 cvs 637: newName[0] = EOS;
1.5 cvs 638: }
639:
1.18 cvs 640: /*
1.31 cvs 641: * Prepare the docname that will refer to this ressource in the
642: * .amaya directory. If the new URL finishes on DIR_SEP, then use
643: * noname.html as a default ressource name
1.18 cvs 644: */
1.19 cvs 645: if (newName[0] != EOS)
1.5 cvs 646: {
1.19 cvs 647: length = strlen (newName) - 1;
1.33 cvs 648: if (newName[length] == used_sep)
1.18 cvs 649: {
650: /* docname was not comprised inside the URL, so let's */
651: /* assign the default ressource name */
652: strcpy (docName, "noname.html");
653: /* remove DIR_SEP at the end of complete path */
1.23 cvs 654: /* newName[length] = EOS; */
1.18 cvs 655: }
1.14 cvs 656: else
1.18 cvs 657: {
658: /* docname is comprised inside the URL */
1.33 cvs 659: while (length >= 0 && newName[length] != used_sep)
1.18 cvs 660: length--;
661: if (length < 0)
662: strcpy (docName, newName);
663: else
664: strcpy (docName, &newName[length+1]);
665: }
1.19 cvs 666:
1.5 cvs 667: }
1.18 cvs 668: else
669: docName[0] = EOS;
670: }
1.3 cvs 671:
1.4 cvs 672: /*----------------------------------------------------------------------
1.9 cvs 673: IsSameHost
1.4 cvs 674: ----------------------------------------------------------------------*/
1.3 cvs 675: #ifdef __STDC__
1.34 cvs 676: boolean IsSameHost (const char *url1, const char *url2)
1.3 cvs 677: #else /* __STDC__ */
678: boolean IsSameHost (url1, url2)
1.34 cvs 679: const char *url1;
680: const char *url2;
1.3 cvs 681: #endif /* __STDC__ */
682: {
1.34 cvs 683: char *basename_ptr1, *basename_ptr2;
684: boolean result;
1.3 cvs 685:
1.25 cvs 686: basename_ptr1 = AmayaParseUrl (url1, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
687: basename_ptr2 = AmayaParseUrl (url2, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
1.3 cvs 688:
1.5 cvs 689: if (strcmp (basename_ptr1, basename_ptr2))
1.8 cvs 690: result = FALSE;
1.5 cvs 691: else
1.8 cvs 692: result = TRUE;
1.3 cvs 693:
1.25 cvs 694: TtaFreeMemory (basename_ptr1);
695: TtaFreeMemory (basename_ptr2);
1.5 cvs 696: return (result);
1.3 cvs 697: }
698:
699:
1.4 cvs 700: /*----------------------------------------------------------------------
1.22 cvs 701: HasKnownFileSuffix
702: returns TRUE if path points to a file ending with a suffix.
703: ----------------------------------------------------------------------*/
704: #ifdef __STDC__
1.34 cvs 705: boolean HasKnownFileSuffix (const char *path)
1.22 cvs 706: #else /* __STDC__ */
707: boolean HasKnownFileSuffix (path)
1.34 cvs 708: const char *path;
1.22 cvs 709: #endif /* __STDC__ */
710: {
1.29 cvs 711: char *root;
712: char temppath[MAX_LENGTH];
713: char suffix[MAX_LENGTH];
1.22 cvs 714:
1.24 cvs 715: if (!path || path[0] == EOS || path[strlen(path)] == DIR_SEP)
1.22 cvs 716: return (FALSE);
717:
1.29 cvs 718: root = AmayaParseUrl(path, "", AMAYA_PARSE_PATH | AMAYA_PARSE_PUNCTUATION);
1.22 cvs 719:
720: if (root)
721: {
722: strcpy (temppath, root);
1.25 cvs 723: TtaFreeMemory (root);
1.22 cvs 724: /* Get the suffix */
725: ExtractSuffix (temppath, suffix);
726:
727: if( suffix[0] == EOS)
728: /* no suffix */
729: return (FALSE);
730:
731: /* Normalize the suffix */
732: ConvertToLowerCase (suffix);
733:
1.23 cvs 734: if (!strcmp (suffix, "gz"))
1.22 cvs 735: /* skip the compressed suffix */
736: {
737: ExtractSuffix (temppath, suffix);
738: if(suffix[0] == EOS)
739: /* no suffix */
740: return (FALSE);
741: /* Normalize the suffix */
742: ConvertToLowerCase (suffix);
743: }
744:
745: if ((strcmp (suffix, "gif")) && (strcmp (suffix, "xbm")) &&
746: (strcmp (suffix, "xpm")) && (strcmp (suffix, "jpg")) &&
747: (strcmp (suffix, "pdf")) && (strcmp (suffix, "png")) &&
748: (strcmp (suffix, "tgz")) && (strcmp (suffix, "xpg")) &&
749: (strcmp (suffix, "xpd")) && (strcmp (suffix, "ps")) &&
750: (strcmp (suffix, "au")) && (strcmp (suffix, "html")) &&
751: (strcmp (suffix, "htm")) && (strcmp (suffix, "shtml")) &&
752: (strcmp (suffix, "txt")) && (strcmp (suffix, "css")) &&
753: (strcmp (suffix, "eps")))
754: return (FALSE);
755: else
756: return (TRUE);
757: }
758: else
759: return (FALSE);
760: }
761:
762:
763: /*----------------------------------------------------------------------
1.24 cvs 764: ChopURL
765: Gives back a URL no longer than MAX_PRINT_URL_LENGTH chars (outputURL).
766: If inputURL is bigger than that size, outputURL receives
767: MAX_PRINT_URL_LENGTH / 2 chars from the beginning of inputURL, "...",
768: and MAX_PRINT_URL_LENGTH / 2 chars from the end of inputURL.
769: If inputURL is not longer than MAX_PRINT_URL_LENGTH chars, it gets
770: copied into outputURL.
771: N.B.: outputURL must point to a memory block of MAX_PRINT_URL_LENGTH
772: chars.
773: ----------------------------------------------------------------------*/
774: #ifdef __STDC__
1.34 cvs 775: void ChopURL (char *outputURL, const char *inputURL)
1.24 cvs 776: #else
777: void ChopURL (outputURL, inputURL)
1.34 cvs 778: char *outputURL;
779: const char *inputURL;
1.24 cvs 780: #endif
1.22 cvs 781:
1.24 cvs 782: {
783: int len;
1.9 cvs 784:
1.24 cvs 785: len = strlen (inputURL);
786: if (len <= MAX_PRINT_URL_LENGTH)
1.29 cvs 787: strcpy (outputURL, inputURL);
1.24 cvs 788: else
789: /* make a truncated urlName on the status window */
790: {
791: strncpy (outputURL, inputURL, MAX_PRINT_URL_LENGTH / 2);
792: outputURL [MAX_PRINT_URL_LENGTH / 2] = EOS;
793: strcat (outputURL, "...");
794: strcat (outputURL, &(inputURL[len - MAX_PRINT_URL_LENGTH / 2 ]));
795: }
1.25 cvs 796: }
797:
798:
799: /*----------------------------------------------------------------------
800: scan
801: Scan a filename for its consituents
802: -----------------------------------
803:
804: On entry,
805: name points to a document name which may be incomplete.
806: On exit,
807: absolute or relative may be nonzero (but not both).
808: host, fragment and access may be nonzero if they were specified.
809: Any which are nonzero point to zero terminated strings.
810: ----------------------------------------------------------------------*/
811: #ifdef __STDC__
812: static void scan (char * name, HTURI * parts)
813: #else /* __STDC__ */
814: static void scan (name, parts)
815: char *name;
816: HTURI *parts;
817:
818: #endif /* __STDC__ */
819: {
1.28 cvs 820: char * p;
821: char * after_access = name;
1.33 cvs 822: char used_sep;
1.32 cvs 823:
1.33 cvs 824: if (name && strchr (name, URL_SEP))
825: {
826: used_sep = URL_SEP;
827: }
828: else
829: {
830: used_sep = DIR_SEP;
831: }
1.32 cvs 832:
1.28 cvs 833: memset(parts, '\0', sizeof(HTURI));
834: /* Look for fragment identifier */
835: if ((p = strrchr(name, '#')) != NULL)
836: {
837: *p++ = '\0';
838: parts->fragment = p;
1.25 cvs 839: }
840:
1.28 cvs 841: for (p=name; *p; p++)
842: {
1.33 cvs 843: if (*p==used_sep || *p=='#' || *p=='?')
1.28 cvs 844: break;
1.32 cvs 845: if (*p==':')
1.28 cvs 846: {
847: *p = 0;
848: parts->access = after_access; /* Scheme has been specified */
849:
850: /* The combination of gcc, the "-O" flag and the HP platform is
851: unhealthy. The following three lines is a quick & dirty fix, but is
852: not recommended. Rather, turn off "-O". */
853:
854: /* after_access = p;*/
855: /* while (*after_access == 0)*/
856: /* after_access++;*/
857: after_access = p+1;
858: if (0==strcasecmp("URL", parts->access))
859: /* Ignore IETF's URL: pre-prefix */
860: parts->access = NULL;
861: else
1.25 cvs 862: break;
863: }
864: }
865:
866: p = after_access;
1.33 cvs 867: if (*p==used_sep)
1.28 cvs 868: {
1.33 cvs 869: if (p[1]==used_sep)
1.28 cvs 870: {
1.25 cvs 871: parts->host = p+2; /* host has been specified */
1.28 cvs 872: *p = 0; /* Terminate access */
873: /* look for end of host name if any */
1.33 cvs 874: p = strchr(parts->host,used_sep);
1.28 cvs 875: if (p)
876: {
1.25 cvs 877: *p=0; /* Terminate host */
878: parts->absolute = p+1; /* Root has been found */
1.28 cvs 879: }
880: }
881: else
882: /* Root found but no host */
883: parts->absolute = p+1;
884: }
885: else
886: {
1.25 cvs 887: parts->relative = (*after_access) ? after_access : 0; /* zero for "" */
1.28 cvs 888: }
1.25 cvs 889: }
890:
891:
892: /*----------------------------------------------------------------------
1.28 cvs 893: AmayaParseUrl: parse a Name relative to another name
894:
895: This returns those parts of a name which are given (and requested)
896: substituting bits from the related name where necessary.
1.25 cvs 897:
1.28 cvs 898: On entry,
1.25 cvs 899: aName A filename given
900: relatedName A name relative to which aName is to be parsed. Give
901: it an empty string if aName is absolute.
902: wanted A mask for the bits which are wanted.
903:
1.28 cvs 904: On exit,
1.25 cvs 905: returns A pointer to a malloc'd string which MUST BE FREED
906: ----------------------------------------------------------------------*/
907: #ifdef __STDC__
1.34 cvs 908: char *AmayaParseUrl (const char *aName, char *relatedName, int wanted)
1.25 cvs 909: #else /* __STDC__ */
1.28 cvs 910: char *AmayaParseUrl (aName, relatedName, wanted)
1.34 cvs 911: const char *aName;
1.28 cvs 912: char *relatedName;
913: int wanted;
1.25 cvs 914:
915: #endif /* __STDC__ */
916: {
1.29 cvs 917: char *return_value;
918: char result[MAX_LENGTH];
919: char name[MAX_LENGTH];
920: char rel[MAX_LENGTH];
921: char *p, *access;
922: HTURI given, related;
923: int len;
1.33 cvs 924: char used_sep;
925: char *used_str;
1.32 cvs 926:
1.33 cvs 927: if (strchr (aName, URL_SEP) || strchr (relatedName, URL_SEP) )
928: {
929: used_str = URL_STR;
930: used_sep = URL_SEP;
931: }
1.32 cvs 932: else
1.33 cvs 933: {
934: used_str = DIR_STR;
935: used_sep = DIR_SEP;
936: }
1.32 cvs 937:
1.29 cvs 938: /* Make working copies of input strings to cut up: */
939: return_value = NULL;
940: result[0] = 0; /* Clear string */
941: strcpy (name, aName);
942: if (relatedName != NULL)
943: strcpy (rel, relatedName);
944: else
945: relatedName[0] = EOS;
946:
947: scan (name, &given);
948: scan (rel, &related);
949: access = given.access ? given.access : related.access;
950: if (wanted & AMAYA_PARSE_ACCESS)
951: if (access)
952: {
953: strcat (result, access);
954: if(wanted & AMAYA_PARSE_PUNCTUATION)
1.32 cvs 955: strcat (result, ":");
1.29 cvs 956: }
957:
958: if (given.access && related.access)
959: /* If different, inherit nothing. */
960: if (strcmp (given.access, related.access) != 0)
961: {
962: related.host = 0;
963: related.absolute = 0;
964: related.relative = 0;
965: related.fragment = 0;
966: }
967:
968: if (wanted & AMAYA_PARSE_HOST)
969: if(given.host || related.host)
970: {
971: if(wanted & AMAYA_PARSE_PUNCTUATION)
972: strcat (result, "//");
973: strcat (result, given.host ? given.host : related.host);
974: }
975:
976: if (given.host && related.host)
977: /* If different hosts, inherit no path. */
978: if (strcmp(given.host, related.host) != 0)
979: {
980: related.absolute = 0;
981: related.relative = 0;
982: related.fragment = 0;
983: }
984:
985: if (wanted & AMAYA_PARSE_PATH)
986: {
987: if (given.absolute)
988: {
989: /* All is given */
990: if (wanted & AMAYA_PARSE_PUNCTUATION)
1.33 cvs 991: strcat (result, used_str);
1.29 cvs 992: strcat (result, given.absolute);
1.25 cvs 993: }
1.29 cvs 994: else if (related.absolute)
995: {
996: /* Adopt path not name */
1.33 cvs 997: strcat (result, used_str);
1.29 cvs 998: strcat (result, related.absolute);
999: if (given.relative)
1000: {
1001: /* Search part? */
1002: p = strchr (result, '?');
1003: if (!p)
1004: p=result+strlen(result)-1;
1.33 cvs 1005: for (; *p!=used_sep; p--); /* last / */
1.29 cvs 1006: /* Remove filename */
1007: p[1]=0;
1008: /* Add given one */
1009: strcat (result, given.relative);
1010: /*SimplifyUrl (&result);*/
1.25 cvs 1011: }
1012: }
1.29 cvs 1013: else if (given.relative)
1014: /* what we've got */
1015: strcat (result, given.relative);
1016: else if (related.relative)
1017: strcat (result, related.relative);
1018: else
1019: /* No inheritance */
1.33 cvs 1020: strcat (result, used_str);
1.25 cvs 1021: }
1.29 cvs 1022:
1023: if (wanted & AMAYA_PARSE_ANCHOR)
1024: if (given.fragment || related.fragment)
1025: {
1026: if (given.absolute && given.fragment)
1027: {
1028: /*Fixes for relURLs...*/
1029: if (wanted & AMAYA_PARSE_PUNCTUATION)
1030: strcat (result, "#");
1031: strcat (result, given.fragment);
1032: }
1033: else if (!(given.absolute) && !(given.fragment))
1034: strcat (result, "");
1035: else
1036: {
1037: if (wanted & AMAYA_PARSE_PUNCTUATION)
1038: strcat (result, "#");
1039: strcat (result, given.fragment ? given.fragment : related.fragment);
1040: }
1041: }
1042: len = strlen (result);
1043: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
1044: strcpy (return_value, result);
1045: return (return_value); /* exactly the right length */
1.25 cvs 1046: }
1047:
1048: /*----------------------------------------------------------------------
1049: HTCanon
1050: Canonicalizes the URL in the following manner starting from the host
1051: pointer:
1052:
1053: 1) The host name is converted to lowercase
1054: 2) Chop off port if `:80' (http), `:70' (gopher), or `:21' (ftp)
1055:
1056: Return: OK The position of the current path part of the URL
1057: which might be the old one or a new one.
1058:
1059: ----------------------------------------------------------------------*/
1060: #ifdef __STDC__
1.28 cvs 1061: static char *HTCanon (char ** filename, char * host)
1.25 cvs 1062: #else /* __STDC__ */
1.28 cvs 1063: static char *HTCanon (filename, host)
1064: char **filename;
1065: char *host;
1.25 cvs 1066: #endif /* __STDC__ */
1067: {
1068: char *newname = NULL;
1069: char *port;
1070: char *strptr;
1071: char *path;
1072: char *access = host-3;
1.33 cvs 1073: char used_sep;
1.32 cvs 1074:
1075:
1.33 cvs 1076: if (*filename && strchr (*filename, URL_SEP))
1077: {
1078: used_sep = URL_SEP;
1079: }
1080: else
1081: {
1082: used_sep = DIR_SEP;
1083: }
1.32 cvs 1084:
1.33 cvs 1085: while (access>*filename && *(access-1)!= used_sep) /* Find access method */
1.25 cvs 1086: access--;
1.33 cvs 1087: if ((path = strchr(host, used_sep)) == NULL) /* Find path */
1.25 cvs 1088: path = host + strlen(host);
1089: if ((strptr = strchr(host, '@')) != NULL && strptr<path) /* UserId */
1090: host = strptr;
1.32 cvs 1091: if ((port = strchr(host, ':')) != NULL && port>path) /* Port number */
1.25 cvs 1092: port = NULL;
1093:
1094: strptr = host; /* Convert to lower-case */
1.33 cvs 1095: while (strptr<path)
1096: {
1.25 cvs 1097: *strptr = tolower(*strptr);
1098: strptr++;
1.33 cvs 1099: }
1.25 cvs 1100:
1101: /* Does the URL contain a full domain name? This also works for a
1102: numerical host name. The domain name is already made lower-case
1103: and without a trailing dot. */
1104: {
1.33 cvs 1105: char *dot = port ? port : path;
1106: if (dot > *filename && *--dot=='.')
1107: {
1108: char *orig=dot, *dest=dot+1;
1109: while((*orig++ = *dest++));
1110: if (port) port--;
1111: path--;
1.25 cvs 1112: }
1113: }
1114: /* Chop off port if `:', `:80' (http), `:70' (gopher), or `:21' (ftp) */
1.33 cvs 1115: if (port)
1116: {
1117: if (!*(port+1) || *(port+1)==used_sep)
1118: {
1119: if (!newname)
1120: {
1.25 cvs 1121: char *orig=port, *dest=port+1;
1122: while((*orig++ = *dest++));
1.33 cvs 1123: }
1124: }
1125: else if ((!strncmp(access, "http", 4) &&
1126: (*(port+1)=='8'&&*(port+2)=='0'&&(*(port+3)==used_sep||!*(port+3)))) ||
1127: (!strncmp(access, "gopher", 6) &&
1128: (*(port+1)=='7'&&*(port+2)=='0'&&(*(port+3)==used_sep||!*(port+3)))) ||
1129: (!strncmp(access, "ftp", 3) &&
1130: (*(port+1)=='2'&&*(port+2)=='1'&&(*(port+3)==used_sep||!*(port+3))))) {
1131: if (!newname)
1132: {
1133: char *orig=port, *dest=port+3;
1134: while((*orig++ = *dest++));
1135: /* Update path position, Henry Minsky */
1136: path -= 3;
1.25 cvs 1137: }
1.33 cvs 1138: }
1139: else if (newname)
1140: strncat(newname, port, (int) (path-port));
1141: }
1.25 cvs 1142:
1.33 cvs 1143: if (newname)
1144: {
1.25 cvs 1145: char *newpath = newname+strlen(newname);
1146: strcat(newname, path);
1147: path = newpath;
1.28 cvs 1148: /* Free old copy */
1149: TtaFreeMemory(*filename);
1.25 cvs 1150: *filename = newname;
1.33 cvs 1151: }
1.25 cvs 1152: return path;
1153: }
1154:
1155:
1156: /*----------------------------------------------------------------------
1.29 cvs 1157: SimplifyUrl: simplify a URI
1.32 cvs 1158: A URI is allowed to contain the sequence xxx/../ which may be
1159: replaced by "" , and the sequence "/./" which may be replaced by DIR_STR.
1.28 cvs 1160: Simplification helps us recognize duplicate URIs.
1.25 cvs 1161:
1.28 cvs 1162: Thus, /etc/junk/../fred becomes /etc/fred
1163: /etc/junk/./fred becomes /etc/junk/fred
1.25 cvs 1164:
1.28 cvs 1165: but we should NOT change
1166: http://fred.xxx.edu/../..
1.25 cvs 1167:
1168: or ../../albert.html
1169:
1.28 cvs 1170: In order to avoid empty URLs the following URLs become:
1.25 cvs 1171:
1172: /fred/.. becomes /fred/..
1173: /fred/././.. becomes /fred/..
1174: /fred/.././junk/.././ becomes /fred/..
1175:
1.28 cvs 1176: If more than one set of `://' is found (several proxies in cascade) then
1177: only the part after the last `://' is simplified.
1.25 cvs 1178:
1.28 cvs 1179: Returns: A string which might be the old one or a new one.
1.25 cvs 1180: ----------------------------------------------------------------------*/
1181: #ifdef __STDC__
1.29 cvs 1182: void SimplifyUrl (char ** url)
1.25 cvs 1183: #else /* __STDC__ */
1.29 cvs 1184: void SimplifyUrl (url)
1.28 cvs 1185: char **url;
1.25 cvs 1186: #endif /* __STDC__ */
1187: {
1.28 cvs 1188: char *path, *p;
1189: char *newptr, *access;
1190: char *orig, *dest, *end;
1191:
1.33 cvs 1192: char used_sep;
1.32 cvs 1193:
1194:
1.28 cvs 1195: if (!url || !*url)
1196: return;
1197:
1.33 cvs 1198: if (strchr (*url, URL_SEP))
1199: {
1200: used_sep = URL_SEP;
1201: }
1.32 cvs 1202: else
1.33 cvs 1203: {
1204: used_sep = DIR_SEP;
1205: }
1.32 cvs 1206:
1.28 cvs 1207: /* Find any scheme name */
1208: if ((path = strstr(*url, "://")) != NULL)
1.33 cvs 1209: {
1210: /* Find host name */
1.28 cvs 1211: access = *url;
1212: while (access<path && (*access=tolower(*access)))
1213: access++;
1214: path += 3;
1215: while ((newptr = strstr(path, "://")) != NULL)
1216: /* For proxies */
1217: path = newptr+3;
1218: /* We have a host name */
1219: path = HTCanon(url, path);
1.25 cvs 1220: }
1.28 cvs 1221: else if ((path = strstr(*url, ":/")) != NULL)
1222: path += 2;
1223: else
1224: path = *url;
1.25 cvs 1225:
1.33 cvs 1226: if (*path == used_sep && *(path+1)==used_sep)
1.28 cvs 1227: /* Some URLs start //<foo> */
1228: path += 1;
1229: else if (!strncmp(path, "news:", 5))
1230: {
1231: newptr = strchr(path+5, '@');
1232: if (!newptr)
1233: newptr = path + 5;
1234: while (*newptr)
1235: {
1236: /* Make group or host lower case */
1237: *newptr = tolower (*newptr);
1238: newptr++;
1.25 cvs 1239: }
1.28 cvs 1240: /* Doesn't need to do any more */
1241: return;
1.25 cvs 1242: }
1.28 cvs 1243:
1244: if ((p = path))
1245: {
1246: if (!((end = strchr (path, ';')) || (end = strchr (path, '?')) ||
1247: (end = strchr (path, '#'))))
1248: end = path + strlen (path);
1249:
1250: /* Parse string second time to simplify */
1251: p = path;
1252: while (p < end)
1253: {
1.33 cvs 1254: if (*p==used_sep)
1.28 cvs 1255: {
1.33 cvs 1256: if (p > *url && *(p+1) == '.' && (*(p+2) == used_sep || !*(p+2)))
1.28 cvs 1257: {
1258: orig = p + 1;
1.33 cvs 1259: dest = (*(p+2)!=used_sep) ? p+2 : p+3;
1.28 cvs 1260: while ((*orig++ = *dest++)); /* Remove a slash and a dot */
1261: end = orig - 1;
1262: }
1.33 cvs 1263: else if (*(p+1)=='.' && *(p+2)=='.' && (*(p+3)==used_sep || !*(p+3)))
1.28 cvs 1264: {
1265: newptr = p;
1.33 cvs 1266: while (newptr>path && *--newptr!=used_sep); /* prev slash */
1.28 cvs 1267: if (strncmp(newptr, "/../", 4))
1268: {
1269: orig = newptr + 1;
1.33 cvs 1270: dest = (*(p+3)!=used_sep) ? p+3 : p+4;
1.28 cvs 1271: while ((*orig++ = *dest++)); /* Remove /xxx/.. */
1272: end = orig-1;
1273: /* Start again with prev slash */
1274: p = newptr;
1.25 cvs 1275: }
1.28 cvs 1276: else
1.25 cvs 1277: p++;
1.28 cvs 1278: }
1.33 cvs 1279: else if (*(p+1) == used_sep)
1.28 cvs 1280: {
1.33 cvs 1281: while (*(p+1) == used_sep)
1.28 cvs 1282: {
1283: orig = p;
1284: dest = p + 1;
1285: while ((*orig++ = *dest++)); /* Remove multiple /'s */
1286: end = orig-1;
1287: }
1288: }
1289: else
1.25 cvs 1290: p++;
1.28 cvs 1291: }
1292: else
1293: p++;
1.25 cvs 1294: }
1295: }
1.28 cvs 1296: return;
1297: }
1298:
1299:
1300: /*----------------------------------------------------------------------
1301: NormalizeFile normalizes local names.
1302: Return TRUE if target and src differ.
1303: ----------------------------------------------------------------------*/
1304: #ifdef __STDC__
1305: boolean NormalizeFile (char *src, char *target)
1306: #else
1307: boolean NormalizeFile (src, target)
1308: char *src;
1309: char *target;
1310:
1311: #endif
1312: {
1313: char *s;
1314: boolean change;
1315:
1316: change = FALSE;
1317: if (src[0] == '~')
1318: {
1319: /* replace ~ */
1320: s = (char *) TtaGetEnvString ("HOME");
1321: strcpy (target, s);
1322: strcat (target, &src[1]);
1323: change = TRUE;
1324: }
1325: else if (strncmp (src, "file:", 5) == 0)
1326: {
1327: /* remove the prefix file: */
1328: if (src[5] == EOS)
1329: strcpy (target, DIR_STR);
1330: else if (src[0] == '~')
1331: {
1332: /* replace ~ */
1333: s = (char *) TtaGetEnvString ("HOME");
1334: strcpy (target, s);
1335: strcat (target, &src[5]);
1336: }
1337: else
1338: strcpy (target, &src[5]);
1339: change = TRUE;
1340: }
1341: else
1342: strcpy (target, src);
1343:
1344: /* remove /../ and /./ */
1.29 cvs 1345: SimplifyUrl (&target);
1.28 cvs 1346: return (change);
1.25 cvs 1347: }
1348:
1.28 cvs 1349:
1.25 cvs 1350: /*----------------------------------------------------------------------
1.31 cvs 1351: MakeRelativeURL: make relative name
1.25 cvs 1352:
1.28 cvs 1353: This function creates and returns a string which gives an expression of
1354: one address as related to another. Where there is no relation, an absolute
1355: address is retured.
1.25 cvs 1356:
1.28 cvs 1357: On entry,
1.25 cvs 1358: Both names must be absolute, fully qualified names of nodes
1359: (no fragment bits)
1360:
1.28 cvs 1361: On exit,
1.25 cvs 1362: The return result points to a newly allocated name which, if
1363: parsed by AmayaParseUrl relative to relatedName, will yield aName.
1364: The caller is responsible for freeing the resulting name later.
1365: ----------------------------------------------------------------------*/
1366: #ifdef __STDC__
1.31 cvs 1367: char *MakeRelativeURL (char *aName, char *relatedName)
1.25 cvs 1368: #else /* __STDC__ */
1.31 cvs 1369: char *MakeRelativeURL (aName, relatedName)
1.28 cvs 1370: char *aName;
1371: char *relatedName;
1.25 cvs 1372: #endif /* __STDC__ */
1373: {
1.29 cvs 1374: char *return_value;
1375: char result[MAX_LENGTH];
1376: char *p;
1.34 cvs 1377: char *q;
1.29 cvs 1378: char *after_access;
1379: char *last_slash = NULL;
1380: int slashes, levels, len;
1381:
1382: if (aName == NULL || relatedName == NULL)
1383: return (NULL);
1384:
1385: slashes = 0;
1386: after_access = NULL;
1387: p = aName;
1388: q = relatedName;
1389: for (; *p && (*p == *q); p++, q++)
1.27 cvs 1390: {
1391: /* Find extent of match */
1.32 cvs 1392: if (*p == ':')
1.29 cvs 1393: after_access = p + 1;
1.28 cvs 1394: if (*p == DIR_SEP)
1.27 cvs 1395: {
1.29 cvs 1396: /* memorize the last slash position and count them */
1.27 cvs 1397: last_slash = p;
1398: slashes++;
1.25 cvs 1399: }
1400: }
1401:
1.31 cvs 1402: /* q, p point to the first non-matching character or zero */
1403: if (*q == EOS)
1404: {
1405: /* New name is a subset of the related name */
1406: /* exactly the right length */
1407: len = strlen (p);
1408: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
1409: strcpy (return_value, p);
1410: }
1411: else if ((slashes < 2 && after_access == NULL)
1412: || (slashes < 3 && after_access != NULL))
1413: {
1414: /* Two names whitout common path */
1415: /* exactly the right length */
1416: len = strlen (aName);
1417: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
1418: strcpy (return_value, aName);
1419: }
1420: else
1421: {
1422: /* Some path in common */
1423: if (slashes == 3 && strncmp (aName, "http:", 5) == 0)
1424: /* just the same server */
1425: strcpy (result, last_slash);
1426: else
1427: {
1428: levels= 0;
1429: for (; *q && (*q != '#'); q++)
1430: if (*q == DIR_SEP)
1431: levels++;
1432:
1433: result[0] = 0;
1434: for (;levels; levels--)
1435: strcat (result, "../");
1436: strcat (result, last_slash+1);
1437: }
1438:
1439: /* exactly the right length */
1440: len = strlen (result);
1441: if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
1442: strcpy (return_value, result);
1.25 cvs 1443: }
1.29 cvs 1444: return (return_value);
1.24 cvs 1445: }
1.35 ! cvs 1446:
! 1447:
Webmaster
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to AHTURLTools.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Public] / Amaya / amaya