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tools.cpp
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tools.cpp
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#include <stdlib.h>
#include <string.h>
#include <iconv.h>
#include <stdint.h>
#include <stdio.h>
#include <errno.h>
#include "tools.h"
char *iconvAlloc(const char *str, const char *to, const char *from, int len) {
int chunk_size = 256, alloc_size = 0;
if(len < 0) {
char *p = (char *)memchr(str, 0, 512); // FIXME: rawmemchr not available on MinGW?
len = p - str;
}
iconv_t cd = iconv_open(to, from);
if(cd < 0) {
fprintf(stderr, "Could not open iconv from=%s to=%s\n", from, to);
return NULL;
}
char *ret = 0;
size_t inbytesleft = len, outbytesleft = 0;
char *inbuf = (char *)str;
while(inbytesleft > 0) {
alloc_size += chunk_size;
ret = (char *)realloc(ret, alloc_size+8);
outbytesleft += chunk_size;
char *outbuf = ret + alloc_size - chunk_size;
memset(outbuf, 0, chunk_size+8);
iconv(cd, NULL, NULL, &outbuf, &outbytesleft); // flush any shift sequences
iconv(cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft);
if(errno == EINVAL || errno == EILSEQ) {
free(ret);
return NULL;
}
}
iconv_close(cd);
return ret;
}
void hexDump(const uint8_t *data, size_t len) {
for(size_t i = 0; i < len; i++) printf("%02x", data[i]);
}
char *replaceExtension(const char *str, const char *newExt, char *dst, size_t maxLen) {
static char buf[512];
if(!dst) {
dst = buf;
maxLen = sizeof(buf);
}
size_t len = strlen(str);
strncpy(dst, str, MIN(maxLen - 1, len + 1));
size_t eLen = strlen(newExt);
char *c = strrchr(dst, '.');
sprintf(dst + MIN(c ? c - dst : len, maxLen - eLen - 2), ".%s", newExt);
return dst;
}
char cleanChar(char c) { return c < 32 || c >= 127 ? '.' : c; }