1 #ifdef HAVE_CONFIG_H 2 #include "config.h" 3 #endif 4 5 #include "gd.h" 6 #include "gdhelpers.h" 7 #include <stdlib.h> 8 #include <string.h> 9 10 /* TBB: gd_strtok_r is not portable; provide an implementation */ 11 12 #define SEP_TEST (separators[*((unsigned char *) s)]) 13 14 char * gd_strtok_r(char * s,char * sep,char ** state)15gd_strtok_r (char *s, char *sep, char **state) 16 { 17 char separators[256]; 18 char *result = 0; 19 memset (separators, 0, sizeof (separators)); 20 while (*sep) 21 { 22 separators[*((unsigned char *) sep)] = 1; 23 sep++; 24 } 25 if (!s) 26 { 27 /* Pick up where we left off */ 28 s = *state; 29 } 30 /* 1. EOS */ 31 if (!(*s)) 32 { 33 *state = s; 34 return 0; 35 } 36 /* 2. Leading separators, if any */ 37 if (SEP_TEST) 38 { 39 do 40 { 41 s++; 42 } 43 while (SEP_TEST); 44 /* 2a. EOS after separators only */ 45 if (!(*s)) 46 { 47 *state = s; 48 return 0; 49 } 50 } 51 /* 3. A token */ 52 result = s; 53 do 54 { 55 /* 3a. Token at end of string */ 56 if (!(*s)) 57 { 58 *state = s; 59 return result; 60 } 61 s++; 62 } 63 while (!SEP_TEST); 64 /* 4. Terminate token and skip trailing separators */ 65 *s = '\0'; 66 do 67 { 68 s++; 69 } 70 while (SEP_TEST); 71 /* 5. Return token */ 72 *state = s; 73 return result; 74 } 75
