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/*
* Copyright (C) 2021 Liquidaty and the zsv/lib contributors
* All rights reserved
*
* This file is part of zsv/lib, distributed under the license defined at
* https://opensource.org/licenses/MIT
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define ZSV_COMMAND count_pull
#include "zsv_command.h"
static int count_usage(void) {
static const char *usage = "Usage: count [options]\n"
"\n"
"Options:\n"
" -h,--help : show usage\n"
" -i,--input <filename> : use specified file input\n";
printf("%s\n", usage);
return 0;
}
int ZSV_MAIN_FUNC(ZSV_COMMAND)(int argc, const char *argv[], struct zsv_opts *opts,
struct zsv_prop_handler *custom_prop_handler) {
const char *input_path = NULL;
int err = 0;
for (int i = 1; !err && i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "-h") || !strcmp(arg, "--help")) {
count_usage();
goto count_done;
}
if (!strcmp(arg, "-i") || !strcmp(arg, "--input") || *arg != '-') {
err = 1;
if ((!strcmp(arg, "-i") || !strcmp(arg, "--input")) && ++i >= argc)
fprintf(stderr, "%s option requires a filename\n", arg);
else {
if (opts->stream)
fprintf(stderr, "Input may not be specified more than once\n");
else if (!(opts->stream = fopen(argv[i], "rb")))
fprintf(stderr, "Unable to open for reading: %s\n", argv[i]);
else {
input_path = argv[i];
err = 0;
}
}
} else {
fprintf(stderr, "Unrecognized option: %s\n", arg);
err = 1;
}
}
#ifdef NO_STDIN
if (!opts->stream || opts->stream == stdin) {
fprintf(stderr, "Please specify an input file\n");
err = 1;
}
#endif
if (!err) {
zsv_parser parser;
if (zsv_new_with_properties(opts, custom_prop_handler, input_path, &parser) != zsv_status_ok) {
fprintf(stderr, "Unable to initialize parser\n");
err = 1;
} else {
size_t count = 0;
while (zsv_next_row(parser) == zsv_status_row)
count++;
zsv_delete(parser);
printf("%zu\n", count > 0 ? count - 1 : 0);
}
}
count_done:
if (opts->stream && opts->stream != stdin)
fclose(opts->stream);
return err;
}
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