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