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//
// Author: Wolfgang Spraul
//
// This is free and unencumbered software released into the public domain.
// For details see the UNLICENSE file at the root of the source tree.
//
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <assert.h>
#include <sys/stat.h>
#include "helper.h"
int main(int argc, char** argv)
{
char line[1024], search_str[1024], replace_str[1024];
char* next_wrd, *lasts;
const char* replace_ptr;
struct hashed_strarray search_arr, replace_arr;
FILE* fp = 0;
int i, rc, search_idx;
if (argc < 3) {
fprintf(stderr,
"\n"
"hstrrep - hashed string replace\n"
"Usage: %s <data_file> <token_file>\n"
" token_file is parsed into two parts: first word is the string\n"
" that is to be replaced, rest of line the replacement.\n", argv[0]);
goto xout;
}
if (strarray_init(&search_arr, STRIDX_1M)) {
fprintf(stderr, "Out of memory in %s:%i\n", __FILE__, __LINE__);
goto xout;
}
if (strarray_init(&replace_arr, STRIDX_1M)) {
fprintf(stderr, "Out of memory in %s:%i\n", __FILE__, __LINE__);
goto xout;
}
//
// Read search and replace tokens into hashed strarray
//
fp = fopen(argv[2], "r");
if (!fp) {
fprintf(stderr, "Error opening %s.\n", argv[2]);
goto xout;
}
while (fgets(line, sizeof(line), fp)) {
memset(replace_str, 0, sizeof(replace_str));
i = sscanf(line, " %[^ ] %1023c", search_str, replace_str);
if (i == 2) {
i = strlen(replace_str);
if (i && replace_str[i-1] == '\n')
replace_str[i-1] = 0;
rc = strarray_add(&search_arr, search_str, &search_idx);
if (rc) {
fprintf(stderr, "Out of memory in %s:%i\n", __FILE__, __LINE__);
goto xout;
}
rc = strarray_stash(&replace_arr, replace_str, search_idx);
if (rc) {
fprintf(stderr, "Out of memory in %s:%i\n", __FILE__, __LINE__);
goto xout;
}
}
}
fclose(fp);
//
// Go through data file and search and replace
//
fp = fopen(argv[1], "r");
if (!fp) {
fprintf(stderr, "Error opening %s.\n", argv[1]);
goto xout;
}
while (fgets(line, sizeof(line), fp)) {
next_wrd = strtok_r(line, " \n", &lasts);
if (next_wrd) {
do {
search_idx = strarray_find(&search_arr, next_wrd);
if (search_idx == STRIDX_NO_ENTRY)
fputs(next_wrd, stdout);
else {
replace_ptr = strarray_lookup(&replace_arr, search_idx);
if (!replace_ptr) {
fprintf(stderr, "Internal error in %s:%i\n", __FILE__, __LINE__);
goto xout;
}
fputs(replace_ptr, stdout);
}
next_wrd = strtok_r(0, " \n", &lasts);
if (next_wrd)
putchar(' ');
} while ( next_wrd );
putchar('\n');
}
}
fclose(fp);
return EXIT_SUCCESS;
xout:
return EXIT_FAILURE;
}
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