92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stdnoreturn.h>
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#include <unistd.h>
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#include "arg.h"
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#include "util.h"
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#define LAT_SHORT_ARGS "cltbrpn:e:Vh"
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#define LAT_USAGE "usage: lat [-cltbrpneVh] [file...]"
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struct config conf;
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void help(void) {
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printf("lat | lazy cat - a cat clone with some quality-of-life "
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"embellishments\n\n");
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printf("%s\n\n", LAT_USAGE);
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printf("options:\n"
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"\t-c toggle color\n"
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"\t-l toggle line numbers\n"
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"\t-t toggle file info headers\n"
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"\t-b set binary mode, -b forces binary and -bb forces NOT "
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"binary\n"
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"\t-r print everything (headers, line numbers, etc.) to "
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"stdout (or equivalent)\n"
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"\t-p print file with the pager (uses less)\n"
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"\t-n <name> manually set the name of the file shown in the title\n"
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"\t-e <program> NONFUNCTIONAL (will be added soon) link extension to lat\n"
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"\t-V show program version\n"
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"\t-h display this help text\n\n");
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printf("environment:\n"
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"\tNO_COLOR, see https://no-color.org/\n");
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}
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void version(void) {
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printf("lat - v%s built %s at %s\n", LAT_VERSION, __DATE__, __TIME__);
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}
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noreturn void argerr(void) {
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printf("\n%s\n", LAT_USAGE);
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printf("run '-h' for more information\n");
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exit(EXIT_FAILURE);
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}
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int parseargs(int argc, char *argv[]) {
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char opt;
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while ((opt = getopt(argc, argv, LAT_SHORT_ARGS)) != -1) {
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switch (opt) {
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case 'c':
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conf.color = !conf.color;
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break;
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case 'l':
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conf.lines = !conf.lines;
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break;
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case 't':
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conf.headers = !conf.headers;
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break;
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case 'b':
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if (conf.force_binary < 0)
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conf.force_binary = 1;
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else
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conf.force_binary = !conf.force_binary;
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break;
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case 'r':
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conf.literal = !conf.literal;
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break;
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case 'p':
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conf.pager = !conf.pager;
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break;
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case 'n':
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conf.name = optarg;
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break;
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case 'e':
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conf.extension = optarg;
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break;
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case 'V':
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version();
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exit(EXIT_SUCCESS);
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break;
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case 'h':
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help();
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exit(EXIT_SUCCESS);
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break;
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default:
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argerr();
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break;
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}
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}
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return optind;
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}
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