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