Annotation of libwww/Library/src/HTDescpt.c, revision 2.10
2.1 frystyk 1: /* HTDescpt.c
2: ** FILE DESCRIPTIONS
3: **
2.2 frystyk 4: ** (c) COPYRIGHT MIT 1995.
2.1 frystyk 5: ** Please first read the full copyright statement in the file COPYRIGH.
6: **
7: ** Authors:
8: ** AL Ari Luotonen <luotonen@dxcern.cern.ch>
9: **
10: ** History:
11: ** 30 Mar 94 AL Written from scratch.
12: **
13: **
14: */
15:
16: /* Library include files */
17: #include "tcp.h"
18: #include "HTUtils.h"
19: #include "HTString.h"
2.3 frystyk 20: #include "HTFormat.h"
2.1 frystyk 21: #include "HTList.h"
22: #include "HTAAUtil.h"
23:
24: #define MAX_LINE_LEN 256
25:
2.10 ! frystyk 26: PRIVATE char * HTDescriptionFile = ".www_descript";
! 27: PRIVATE BOOL HTPeekTitles = YES;
2.1 frystyk 28:
29: /*
30: * Get the descriptions for files in the given directory.
31: * The return value is then later passed as an argument
32: * to HTGetDescription() which returns a description
33: * string for a single file.
34: */
2.9 frystyk 35: PUBLIC HTList * HTReadDescriptions (char * dirname)
2.1 frystyk 36: {
37: char * name = NULL;
38: FILE * fp = NULL;
39: HTList * list = NULL;
40: char buf[MAX_LINE_LEN + 1];
41:
42: if (!dirname) return NULL;
43:
44: name = (char*)malloc(strlen(dirname) + strlen(HTDescriptionFile) + 2);
45: if (!name) outofmem(__FILE__, "HTReadDescriptions");
46:
47: sprintf(name, "%s/%s", dirname, HTDescriptionFile);
48: fp = fopen(name, "r");
49: if (!fp) {
50: if (PROT_TRACE)
2.6 frystyk 51: TTYPrint(TDEST, "DirBrowse... No description file %s\n", name);
2.1 frystyk 52: FREE(name);
53: return NULL;
54: } else {
2.5 frystyk 55: if (WWWTRACE)
2.6 frystyk 56: TTYPrint(TDEST, "DirBrowse... Description file found %s\n", name);
2.1 frystyk 57: }
58:
59: list = HTList_new();
60:
61: while (fgets(buf, MAX_LINE_LEN, fp)) {
62: char * s = buf;
63: char * t = NULL;
64: char * d = NULL;
65:
66: while (*s && WHITE(*s)) s++; /* Skip initial whitespace */
67: if (*s!='d' && *s!='D') continue; /* Junk non-description lines*/
68:
69: t = s+1;
70: while (*t && !WHITE(*t)) t++; /* Find the end of the keyword */
71: while (*t && WHITE(*t)) t++; /* Find the beginning of template */
72:
73: if (*t) {
74: d = t+1;
75: while (*d && !WHITE(*d)) d++; /* Find end of template */
76: if (*d) {
77: *d++ = 0; /* Terminate template */
78: while (*d && WHITE(*d)) d++; /* Find start of description */
79: if (*d) {
80: char * p = d;
81: while (*p && *p!='\r' && *p!='\n') p++;
82: *p = 0; /* Terminate description */
83: }
84: }
85: }
86: if (t && d && *t && *d) {
87: char * stuff = (char *) malloc(strlen(t) + strlen(d) + 2);
88: if (!stuff) outofmem(__FILE__, "HTDirReadDescriptions");
89: sprintf(stuff, "%s %s", t, d);
90: HTList_addObject(list, (void*)stuff);
91: if (PROT_TRACE)
2.6 frystyk 92: TTYPrint(TDEST, "Description. %s\n", stuff);
2.1 frystyk 93: }
94: }
95: fclose(fp);
96: FREE(name);
97: return list;
98: }
99:
100:
2.9 frystyk 101: PUBLIC void HTFreeDescriptions (HTList * descriptions)
2.1 frystyk 102: {
103: HTList * cur = descriptions;
104: char * str;
105:
106: if (descriptions) {
107: while ((str = (char*)HTList_nextObject(cur)))
108: free(str);
109: HTList_delete(descriptions);
110: }
111: }
112:
113:
2.9 frystyk 114: PRIVATE char * HTPeekTitle (char * dirname,
115: char * filename)
2.1 frystyk 116: {
117: #define PEEK_BUF_SIZE 200
118: char * name;
119: FILE * fp;
120: char buf[PEEK_BUF_SIZE + 1];
121: int status;
122: char * cur;
123: char * end;
124: static char * ret = NULL;
125: char * p;
126: BOOL space = YES;
127:
128: FREE(ret); /* From previous call */
129:
130: if (PROT_TRACE)
2.6 frystyk 131: TTYPrint(TDEST, "HTPeekTitle. called, dirname=%s filename=%s\n",
2.1 frystyk 132: dirname ? dirname : "-null-",
133: filename ? filename : "-null-");
134:
135: if (!dirname || !filename) return NULL;
136:
137: name = (char*)malloc(strlen(dirname) + strlen(filename) + 2);
138: if (!name) outofmem(__FILE__, "HTPeekTitle");
139: sprintf(name, "%s/%s", dirname, filename);
140:
141: fp = fopen(name, "r");
142: if (!fp) {
143: if (PROT_TRACE)
2.6 frystyk 144: TTYPrint(TDEST, "HTPeekTitle. fopen failed\n");
2.1 frystyk 145: goto cleanup;
146: }
147:
148: status = fread(buf, 1, PEEK_BUF_SIZE, fp);
149: fclose(fp);
150: if (status <= 0) goto cleanup;
151: buf[status] = 0;
152:
153: cur = buf;
154: while ((cur = strchr(cur,'<'))) {
155: if (!strncasecomp(cur+1,"TITLE>",6)) {
156: cur += 7;
157: end = strchr(cur,'<');
158: while (end && strncasecomp(end+1, "/TITLE>", 7))
159: end = strchr(end+1, '<');
160: if (end) *end = 0;
161: p = ret = (char*)malloc(strlen(cur) + 1);
162: if (!ret) outofmem(__FILE__, "HTPeekTitle");
163: while (*cur) {
164: if (WHITE(*cur)) {
165: if (!space) {
166: space = YES;
167: *p++ = ' ';
168: }
169: }
170: else {
171: if (space) space = NO;
172: *p++ = *cur;
173: }
174: cur++;
175: }
176: *p = 0;
177: goto cleanup;
178: }
179: cur++;
180: }
181:
182: cleanup:
183: if (PROT_TRACE)
2.6 frystyk 184: TTYPrint(TDEST, "HTPeekTitle. returning %c%s%c\n",
2.1 frystyk 185: ret ? '"' : '-', ret ? ret : "null", ret ? '"' : '-');
186: FREE(name);
187: return ret;
188: }
189:
190:
191: /*
192: * Returns a description string (that must not be freed!)
193: * for a file with name name in directory dirname.
194: * Description file contents is in descriptions list.
195: */
2.9 frystyk 196: PUBLIC char * HTGetDescription (HTList * descriptions,
197: char * dirname,
198: char * filename,
199: HTFormat format)
2.1 frystyk 200: {
201: HTList * cur = descriptions;
202: char * t;
203:
204: if (!dirname || !filename) return NULL;
205: /*
206: * descriptions may well be NULL in which case we may still
207: * want to peek the titles.
208: */
209:
210: while ((t = (char*)HTList_nextObject(cur))) {
211: char * d = strchr(t,' ');
212: if (!d) continue;
213: *d = 0;
214: if (HTAA_templateMatch(t,filename)) {
215: *d = ' ';
216: return d+1;
217: }
218: *d = ' ';
219: }
220:
221: if (HTPeekTitles && format == WWW_HTML)
222: return HTPeekTitle(dirname, filename);
223: else
224: return NULL;
225: }
226:
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