ReactOS 0.4.15-dev-8096-ga0eec98
strtokc.c
Go to the documentation of this file.
1/* strtokc.c */
2
3#include <string.h>
4#include "Strn.h"
5
6char *
7strtokc(char *parsestr, const char *delims, char **context)
8{
9 char *cp;
10 const char *cp2;
11 char c, c2;
12 char *start;
13
14 if (parsestr == NULL)
15 start = *context;
16 else
17 start = parsestr;
18
19 if ((start == NULL) || (delims == NULL)) {
20 *context = NULL;
21 return NULL;
22 }
23
24 /* Eat leading delimiters. */
25 for (cp = start; ; ) {
26next1:
27 c = *cp++;
28 if (c == '\0') {
29 /* No more tokens. */
30 *context = NULL;
31 return (NULL);
32 }
33 for (cp2 = delims; ; ) {
34 c2 = (char) *cp2++;
35 if (c2 == '\0') {
36 /* This character was not a delimiter.
37 * The token starts here.
38 */
39 start = cp - 1;
40 goto starttok;
41 }
42 if (c2 == c) {
43 /* This char was a delimiter. */
44 /* Skip it, look at next character. */
45 goto next1;
46 }
47 }
48 /*NOTREACHED*/
49 }
50
51starttok:
52 for ( ; ; cp++) {
53 c = *cp;
54 if (c == '\0') {
55 /* Token is finished. */
56 *context = cp;
57 break;
58 }
59 for (cp2 = delims; ; ) {
60 c2 = (char) *cp2++;
61 if (c2 == '\0') {
62 /* This character was not a delimiter.
63 * Keep it as part of current token.
64 */
65 break;
66 }
67 if (c2 == c) {
68 /* This char was a delimiter. */
69 /* End of token. */
70 *cp++ = '\0';
71 *context = cp;
72 return (start);
73 }
74 }
75 }
76 return (start);
77} /* strtokc */
78
79
80
81
82/* Same as strtokc, only you specify the destination buffer to write
83 * the token in along with its size. strntokc will write to the dst
84 * buffer, always nul-terminating it.
85 *
86 * It also returns the length of the token, or zero if there was no
87 * token. This differs from strtokc, which returns a pointer to the
88 * token or NULL for no token.
89 */
90
91int
92strntokc(char *dstTokenStart, size_t tokenSize, char *parsestr, const char *delims, char **context)
93{
94 char *cp;
95 const char *cp2;
96 char c, c2;
97 char *start;
98 int len;
99 char *dst, *lim;
100
101 dst = dstTokenStart;
102 lim = dst + tokenSize - 1; /* Leave room for nul byte. */
103
104 if (parsestr == NULL)
105 start = *context;
106 else
107 start = parsestr;
108
109 if ((start == NULL) || (delims == NULL)) {
110 *context = NULL;
111 goto done;
112 }
113
114 /* Eat leading delimiters. */
115 for (cp = start; ; ) {
116next1:
117 c = *cp++;
118 if (c == '\0') {
119 /* No more tokens. */
120 *context = NULL;
121 goto done;
122 }
123 for (cp2 = delims; ; ) {
124 c2 = (char) *cp2++;
125 if (c2 == '\0') {
126 /* This character was not a delimiter.
127 * The token starts here.
128 */
129 start = cp - 1;
130 if (dst < lim)
131 *dst++ = c;
132 goto starttok;
133 }
134 if (c2 == c) {
135 /* This char was a delimiter. */
136 /* Skip it, look at next character. */
137 goto next1;
138 }
139 }
140 /*NOTREACHED*/
141 }
142
143starttok:
144 for ( ; ; cp++) {
145 c = *cp;
146 if (c == '\0') {
147 /* Token is finished. */
148 *context = cp;
149 break;
150 }
151 for (cp2 = delims; ; ) {
152 c2 = (char) *cp2++;
153 if (c2 == '\0') {
154 /* This character was not a delimiter.
155 * Keep it as part of current token.
156 */
157 break;
158 }
159 if (c2 == c) {
160 /* This char was a delimiter. */
161 /* End of token. */
162 *cp++ = '\0';
163 *context = cp;
164 goto done;
165 }
166 }
167 if (dst < lim) /* Don't overrun token size. */
168 *dst++ = c;
169 }
170
171done:
172 *dst = '\0';
173 len = (int) (dst - dstTokenStart); /* Return length of token. */
174
175#if (STRN_ZERO_PAD == 1)
176 /* Pad with zeros. */
177 for (++dst; dst <= lim; )
178 *dst++ = 0;
179#endif /* STRN_ZERO_PAD */
180
181 return (len);
182} /* strntokc */
183
184
185
186
187#ifdef TESTING_STRTOK
188#include <stdio.h>
189
190void
191main(int argc, char **argv)
192{
193 char buf[256];
194 int i;
195 char *t;
196 char token[8];
197 int tokenLen;
198 char *context;
199
200 if (argc < 3) {
201 fprintf(stderr, "Usage: test \"buffer,with,delims\" <delimiters>\n");
202 exit(1);
203 }
204 strcpy(buf, argv[1]);
205 i = 1;
206 t = strtok(buf, argv[2]);
207 if (t == NULL)
208 exit(0);
209 do {
210 printf("strtok %d=[%s] length=%d\n", i, t, (int) strlen(t));
211 t = strtok(NULL, argv[2]);
212 ++i;
213 } while (t != NULL);
214
215 printf("------------------------------------------------\n");
216 strcpy(buf, argv[1]);
217 i = 1;
218 t = strtokc(buf, argv[2], &context);
219 if (t == NULL)
220 exit(0);
221 do {
222 printf("strtokc %d=[%s] length=%d\n", i, t, (int) strlen(t));
223 t = strtokc(NULL, argv[2], &context);
224 ++i;
225 } while (t != NULL);
226
227 printf("------------------------------------------------\n");
228 strcpy(buf, argv[1]);
229 i = 1;
230 tokenLen = strntokc(token, sizeof(token), buf, argv[2], &context);
231 if (tokenLen <= 0)
232 exit(0);
233 do {
234 printf("strntokc %d=[%s] length=%d\n", i, token, tokenLen);
235 tokenLen = strntokc(token, sizeof(token), NULL, argv[2], &context);
236 ++i;
237 } while (tokenLen > 0);
238 exit(0);
239}
240#endif
static int argc
Definition: ServiceArgs.c:12
ACPI_SIZE strlen(const char *String)
Definition: utclib.c:269
char * strcpy(char *DstString, const char *SrcString)
Definition: utclib.c:388
char * strtok(char *String, const char *Delimiters)
Definition: utclib.c:338
#define NULL
Definition: types.h:112
unsigned int(__cdecl typeof(jpeg_read_scanlines))(struct jpeg_decompress_struct *
Definition: typeof.h:31
unsigned char
Definition: typeof.h:29
int main()
Definition: test.c:6
#define printf
Definition: freeldr.h:97
GLuint start
Definition: gl.h:1545
GLdouble GLdouble t
Definition: gl.h:2047
const GLubyte * c
Definition: glext.h:8905
GLenum GLuint GLenum GLsizei const GLchar * buf
Definition: glext.h:7751
GLenum GLenum dst
Definition: glext.h:6340
GLenum GLsizei len
Definition: glext.h:6722
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat token
Definition: glfuncs.h:210
#define stderr
Definition: stdio.h:100
_Check_return_opt_ _CRTIMP int __cdecl fprintf(_Inout_ FILE *_File, _In_z_ _Printf_format_string_ const char *_Format,...)
#define c
Definition: ke_i.h:80
POINT cp
Definition: magnifier.c:59
#define argv
Definition: mplay32.c:18
#define exit(n)
Definition: config.h:202
int strntokc(char *dstTokenStart, size_t tokenSize, char *parsestr, const char *delims, char **context)
Definition: strtokc.c:92
char * strtokc(char *parsestr, const char *delims, char **context)
Definition: strtokc.c:7
Definition: http.c:7252