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migration of concat to macro based implementation

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nova
2025-11-16 11:34:11 +01:00
parent be9436570c
commit ddcf4d4105
4 changed files with 102 additions and 74 deletions
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40
backend.c
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@@ -1,14 +1,40 @@
#include <stdlib.h>
#include <string.h>
char* concat(const char *s1, const char *s2){
const size_t len1 = strlen(s1);
const size_t len2 = strlen(s2);
char *result = malloc(len1 + len2 + 1);
memcpy(result, s1, len1);
memcpy(result + len1, s2, len2 + 1);
return result;
#define concat(out, s1, s2, _free) { \
concat## _free(out, s1, s2); \
}
#define concat0(out, s1, s2) \
char *result = malloc(strlen(s1) + strlen(s2) + 1); \
memcpy(result, s1, strlen(s1)); \
memcpy(result + strlen(s1), s2, strlen(s2) + 1); \
out = result;
#define concat1(out, s1, s2) \
char *result = malloc(strlen(s1) + strlen(s2) + 1); \
memcpy(result, s1, strlen(s1)); \
memcpy(result + strlen(s1), s2, strlen(s2) + 1); \
free(s1); \
out = result;
#define concat2(out, s1, s2) \
char *result = malloc(strlen(s1) + strlen(s2) + 1); \
memcpy(result, s1, strlen(s1)); \
memcpy(result + strlen(s1), s2, strlen(s2) + 1); \
free(s2); \
out = result;
#define concat3(out, s1, s2) \
char *result = malloc(strlen(s1) + strlen(s2) + 1); \
memcpy(result, s1, strlen(s1)); \
memcpy(result + strlen(s1), s2, strlen(s2) + 1); \
free(s1); \
free(s2); \
out = result;
char* smartstrcasestr(const char *haystack, const char *needle){
char smart = 0;
char *ret;