46 lines
1.6 KiB
Plaintext
46 lines
1.6 KiB
Plaintext
//// You must free the result if result is non-NULL.
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//char *str_replace(char *orig, char *rep, char *with) {
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// char *result; // the return string
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// char *ins; // the next insert point
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// char *tmp; // varies
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// int len_rep; // length of rep (the string to remove)
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// int len_with; // length of with (the string to replace rep with)
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// int len_front; // distance between rep and end of last rep
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// int count; // number of replacements
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// // sanity checks and initialization
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// if (!orig || !rep)
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// return null;
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// len_rep = len(rep);
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// if (len_rep == 0)
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// return null; // empty rep causes infinite loop during count
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// if (!with)
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// with = "";
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// len_with = len(with);
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// // count the number of replacements needed
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// ins = orig;
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// for (count = 0; tmp = instr(ins, rep); ++count) {
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// ins = tmp + len_rep;
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// }
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// tmp = result = malloc(len(orig) + (len_with - len_rep) * count + 1);
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// if (!result)
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// return null;
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// // first time through the loop, all the variable are set correctly
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// // from here on,
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// // tmp points to the end of the result string
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// // ins points to the next occurrence of rep in orig
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// // orig points to the remainder of orig after "end of rep"
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// while (count--) {
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// ins = instr(orig, rep);
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// len_front = ins - orig;
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// tmp = mid(tmp, orig, len_front) + len_front;
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// tmp = strcpy(tmp, with) + len_with;
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// orig += len_front + len_rep; // move to next "end of rep"
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// }
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// strcpy(tmp, orig);
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// return result;
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//} |