Annotation of libwww/Library/src/HTString.c, revision 2.11
2.10 frystyk 1: /* HTString.c
2: ** DYNAMIC STRING UTILITIES
3: **
4: ** (c) COPYRIGHT CERN 1994.
5: ** Please first read the full copyright statement in the file COPYRIGH.
1.1 timbl 6: **
7: ** Original version came with listserv implementation.
8: ** Version TBL Oct 91 replaces one which modified the strings.
9: ** 02-Dec-91 (JFG) Added stralloccopy and stralloccat
10: ** 23 Jan 92 (TBL) Changed strallocc* to 8 char HTSAC* for VM and suchlike
11: ** 6 Oct 92 (TBL) Moved WWW_TraceFlag in here to be in library
12: */
2.8 frystyk 13:
2.11 ! roeber 14: #include "sysdep.h"
1.1 timbl 15: #include "HTUtils.h"
2.8 frystyk 16: #include "HTString.h" /* Implemented here */
1.1 timbl 17:
18: PUBLIC int WWW_TraceFlag = 0; /* Global trace flag for ALL W3 code */
19:
20: #ifndef VC
21: #define VC "unknown"
22: #endif
23:
24: PUBLIC CONST char * HTLibraryVersion = VC; /* String for help screen etc */
25:
2.11 ! roeber 26: #ifndef HAVE_STRCASECOMP
1.1 timbl 27:
28: /* Strings of any length
29: ** ---------------------
30: */
31: PUBLIC int strcasecomp ARGS2 (CONST char*,a, CONST char *,b)
32: {
33: CONST char *p =a;
34: CONST char *q =b;
35: for(p=a, q=b; *p && *q; p++, q++) {
36: int diff = TOLOWER(*p) - TOLOWER(*q);
37: if (diff) return diff;
38: }
39: if (*p) return 1; /* p was longer than q */
40: if (*q) return -1; /* p was shorter than q */
41: return 0; /* Exact match */
42: }
2.11 ! roeber 43: #endif
1.1 timbl 44:
2.11 ! roeber 45: #ifndef HAVE_STRNCASECOMP
1.1 timbl 46:
47: /* With count limit
48: ** ----------------
49: */
50: PUBLIC int strncasecomp ARGS3(CONST char*,a, CONST char *,b, int,n)
51: {
52: CONST char *p =a;
53: CONST char *q =b;
54:
55: for(p=a, q=b;; p++, q++) {
56: int diff;
57: if (p == a+n) return 0; /* Match up to n characters */
58: if (!(*p && *q)) return *p - *q;
59: diff = TOLOWER(*p) - TOLOWER(*q);
60: if (diff) return diff;
61: }
62: /*NOTREACHED*/
63: }
64: #endif
65:
2.7 luotonen 66:
67: /*
68: * strcasestr(s1,s2) -- like strstr(s1,s2) but case-insensitive.
69: */
70: PUBLIC char * strcasestr ARGS2(char *, s1,
71: char *, s2)
72: {
2.9 frystyk 73: char * ptr = s1;
2.7 luotonen 74:
75: if (!s1 || !s2 || !*s2) return s1;
76:
2.9 frystyk 77: while (*ptr) {
78: if (TOUPPER(*ptr) == TOUPPER(*s2)) {
79: char * cur1 = ptr + 1;
2.7 luotonen 80: char * cur2 = s2 + 1;
81: while (*cur1 && *cur2 && TOUPPER(*cur1) == TOUPPER(*cur2)) {
82: cur1++;
83: cur2++;
84: }
85: if (!*cur2) {
86: CTRACE(stderr,
87: "Debug....... strcasestr(s1 = \"%s\", s2 = \"%s\") => \"%s\"\n",
2.9 frystyk 88: s1,s2,ptr);
89: return ptr;
2.7 luotonen 90: }
91: }
2.9 frystyk 92: ptr++;
2.7 luotonen 93: }
94: CTRACE(stderr,
95: "Debug....... strcasestr(s1 = \"%s\", s2 = \"%s\") => No match\n",
96: s1,s2);
97: return NULL;
98: }
99:
100:
101:
1.1 timbl 102: /* Allocate a new copy of a string, and returns it
103: */
104: PUBLIC char * HTSACopy
105: ARGS2 (char **,dest, CONST char *,src)
106: {
107: if (*dest) free(*dest);
108: if (! src)
109: *dest = NULL;
110: else {
111: *dest = (char *) malloc (strlen(src) + 1);
112: if (*dest == NULL) outofmem(__FILE__, "HTSACopy");
113: strcpy (*dest, src);
114: }
115: return *dest;
116: }
117:
2.6 timbl 118: /* String Allocate and Concatenate
119: */
1.1 timbl 120: PUBLIC char * HTSACat
121: ARGS2 (char **,dest, CONST char *,src)
122: {
123: if (src && *src) {
124: if (*dest) {
125: int length = strlen (*dest);
126: *dest = (char *) realloc (*dest, length + strlen(src) + 1);
127: if (*dest == NULL) outofmem(__FILE__, "HTSACat");
128: strcpy (*dest + length, src);
129: } else {
130: *dest = (char *) malloc (strlen(src) + 1);
131: if (*dest == NULL) outofmem(__FILE__, "HTSACat");
132: strcpy (*dest, src);
133: }
134: }
135: return *dest;
2.6 timbl 136: }
137:
138:
139: /* Find next Field
140: ** ---------------
141: **
142: ** On entry,
143: ** *pstr points to a string containig white space separated
144: ** field, optionlly quoted.
145: **
146: ** On exit,
147: ** *pstr has been moved to the first delimiter past the
148: ** field
149: ** THE STRING HAS BEEN MUTILATED by a 0 terminator
150: **
151: ** returns a pointer to the first field
152: */
153: PUBLIC char * HTNextField ARGS1(char **, pstr)
154: {
155: char * p = *pstr;
156: char * start; /* start of field */
157:
158: while(*p && WHITE(*p)) p++; /* Strip white space */
159: if (!*p) {
160: *pstr = p;
161: return NULL; /* No first field */
162: }
163: if (*p == '"') { /* quoted field */
164: p++;
165: start = p;
166: for(;*p && *p!='"'; p++) {
167: if (*p == '\\' && p[1]) p++; /* Skip escaped chars */
168: }
169: } else {
170: start = p;
171: while(*p && !WHITE(*p)) p++; /* Skip first field */
172: }
173: if (*p) *p++ = 0;
174: *pstr = p;
175: return start;
1.1 timbl 176: }
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