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#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "options.h"
#include "../config.h"
static const char *usage_str =
""
"Usage: fzy [OPTION]...\n"
" -l, --lines=LINES Specify how many lines of results to show (default 10)\n"
" -p, --prompt=PROMPT Input prompt (default '> ')\n"
" -q, --query=QUERY Use QUERY as the initial search string\n"
" -e, --show-matches=QUERY Output the sorted matches of QUERY\n"
" -t, --tty=TTY Specify file to use as TTY device (default /dev/tty)\n"
" -s, --show-scores Show the scores of each match\n"
" -0, --read-null Read input delimited by ASCII NUL characters\n"
" -j, --workers NUM Use NUM workers for searching. (default is # of CPUs)\n"
" -i, --show-info Show selection info line\n"
" -f, --search-fields=SELECTOR Use these fields for searching. Default is the whole line.\n"
" -F, --output-fields=SELECTOR Use these fields for output. Default is the whole line)\n"
" -d, --delimiters=DELIM Use these delimiters to split input lines into fields. Default is '<space><Tab>'.\n"
" -h, --help Display this help and exit\n"
" -v, --version Output version information and exit\n";
static void usage(const char *argv0) {
fprintf(stderr, usage_str, argv0);
}
static struct option longopts[] = {{"show-matches", required_argument, NULL, 'e'},
{"query", required_argument, NULL, 'q'},
{"lines", required_argument, NULL, 'l'},
{"tty", required_argument, NULL, 't'},
{"prompt", required_argument, NULL, 'p'},
{"show-scores", no_argument, NULL, 's'},
{"read-null", no_argument, NULL, '0'},
{"version", no_argument, NULL, 'v'},
{"benchmark", optional_argument, NULL, 'b'},
{"workers", required_argument, NULL, 'j'},
{"show-info", no_argument, NULL, 'i'},
{"search-fields", required_argument, NULL, 'f'},
{"output-fields", required_argument, NULL, 'F'},
{"delimiter", required_argument, NULL, 'd'},
{"help", no_argument, NULL, 'h'},
{NULL, 0, NULL, 0}};
static void field_selector_uninit(FieldSelector *fs)
{
if (!fs)
return;
free(fs->ranges);
fs->ranges = NULL;
fs->nb_ranges = 0;
}
static int field_selector_parse(FieldSelector *fs, char *str)
{
size_t nb_ranges;
int cur_range;
field_selector_uninit(fs);
if (!str || !*str)
return 0;
nb_ranges = 1;
for (const char *p = str; *p; p++) {
if (*p == ',')
nb_ranges++;
}
fs->ranges = calloc(nb_ranges, sizeof(*fs->ranges));
if (!fs->ranges)
return -ENOMEM;
fs->nb_ranges = nb_ranges;
cur_range = 0;
while (*str) {
int start, end;
start = 0;
if (*str == '-' || isdigit(*str))
start = strtol(str, &str, 0);
if (*str == ':') {
str++;
end = (*str == '-' || isdigit(*str)) ?
strtol(str, &str, 0) : -1;
} else
end = start;
if (*str) {
if (*str != ',') {
field_selector_uninit(fs);
return -EINVAL;
}
str++;
}
fs->ranges[cur_range].start = start;
fs->ranges[cur_range].end = end;
cur_range++;
}
return 0;
}
void options_uninit(options_t *options)
{
field_selector_uninit(&options->search_fields);
field_selector_uninit(&options->output_fields);
memset(options, 0, sizeof(*options));
}
void options_init(options_t *options) {
/* set defaults */
memset(options, 0, sizeof(*options));
options->benchmark = 0;
options->filter = NULL;
options->init_search = NULL;
options->show_scores = 0;
options->scrolloff = 1;
options->tty_filename = DEFAULT_TTY;
options->num_lines = DEFAULT_NUM_LINES;
options->prompt = DEFAULT_PROMPT;
options->workers = DEFAULT_WORKERS;
options->input_delimiter = '\n';
options->show_info = DEFAULT_SHOW_INFO;
options->delimiters = DEFAULT_DELIMITERS;
}
void options_parse(options_t *options, int argc, char *argv[]) {
options_init(options);
int c;
while ((c = getopt_long(argc, argv, "vhs0e:q:l:t:p:j:id:f:F:", longopts, NULL)) != -1) {
switch (c) {
case 'v':
printf("%s " VERSION " © 2014-2018 John Hawthorn\n", argv[0]);
exit(EXIT_SUCCESS);
case 's':
options->show_scores = 1;
break;
case '0':
options->input_delimiter = '\0';
break;
case 'q':
options->init_search = optarg;
break;
case 'e':
options->filter = optarg;
break;
case 'b':
if (optarg) {
if (sscanf(optarg, "%d", &options->benchmark) != 1) {
usage(argv[0]);
exit(EXIT_FAILURE);
}
} else {
options->benchmark = 100;
}
break;
case 't':
options->tty_filename = optarg;
break;
case 'p':
options->prompt = optarg;
break;
case 'j':
if (sscanf(optarg, "%u", &options->workers) != 1) {
usage(argv[0]);
exit(EXIT_FAILURE);
}
break;
case 'l': {
int l;
if (!strcmp(optarg, "max")) {
l = INT_MAX;
} else if (sscanf(optarg, "%d", &l) != 1 || l < 3) {
fprintf(stderr, "Invalid format for --lines: %s\n", optarg);
fprintf(stderr, "Must be integer in range 3..\n");
usage(argv[0]);
exit(EXIT_FAILURE);
}
options->num_lines = l;
} break;
case 'i':
options->show_info = 1;
break;
case 'd':
options->delimiters = optarg;
break;
case 'f': {
int ret = field_selector_parse(&options->search_fields, optarg);
if (ret < 0) {
fprintf(stderr, "Invalid format for --search-fields: %s\n", optarg);
usage(argv[0]);
exit(EXIT_FAILURE);
}
} break;
case 'F': {
int ret = field_selector_parse(&options->output_fields, optarg);
if (ret < 0) {
fprintf(stderr, "Invalid format for --output-field: %s\n", optarg);
usage(argv[0]);
exit(EXIT_FAILURE);
}
} break;
case 'h':
default:
usage(argv[0]);
exit(EXIT_SUCCESS);
}
}
if (optind != argc) {
usage(argv[0]);
exit(EXIT_FAILURE);
}
}
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