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#include <fcntl.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#define PIPE_PATH "/tmp/tsarc.pipe"
#define STACK_LEN(arr) (sizeof(arr)/sizeof(arr[0]))
const char help_text[] =
"usage: tsarc [command] ...\n"
"commands:\n"
"\tconfig - configure tsarbar settings\n"
"\tset - set component data and options\n"
"\tlayout - define the layout of the bar\n"
"\n"
"config:\n"
"usage: tsarc config (-[property] [value] ...)\n"
"\t-height - height of the bar, in pixels\n"
"\t-font - font to use\n"
"\t-gap - gap between components, in pixels\n"
"\t-foreground, -fg - foreground color, as a hex code (e.g. #FFAA44)\n"
"\t-background, -bg - background color, as a hex code (e.g. #FFAA44)\n"
"\n"
"set:\n"
"usage: tsarc set [variable] (-[property] [value] ...)\n"
"\t-text - text of the component\n"
"\t-fg - foreground color, as a hex code (e.g. #FFAA44)\n"
"\t-bg - background color, as a hex code (e.g. #FFAA44)\n"
"\t-margin-left - margin to the left, in pixels\n"
"\t-margin-right - margin to the right, in pixels\n"
"\t-margin - sets both -margin-left and -margin-right\n"
"\n"
"layout:\n"
"usage: tsarc layout (-[side] [component list] ...)\n"
"\t-left, -center, -right - valid sides\n"
;
const char *valid_config_properties[] = {
"-height",
"-font",
"-gap",
"-fg",
"-bg",
"-foreground",
"-background",
};
const char *valid_set_properties[] = {
"-text",
"-fg",
"-bg",
"-margin-left",
"-margin-right",
"-margin",
};
void show_help(FILE* file) {
fputs(help_text, file);
}
bool verify_argument_spelling(const char* arg, const char** valid, int validc) {
for (int i = 0; i < validc; i++) {
if (strcmp(arg, valid[i]) == 0) {
return true;
}
}
return false;
}
void die(const char* fmt, ...) {
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
putc('\n', stderr);
show_help(stderr);
exit(1);
}
int main(int argc, const char* argv[]) {
if (argc < 2) {
die("error: missing a command");
}
const char* cmd = argv[1];
if (strcmp(cmd, "-h") == 0 || strcmp(cmd, "--help") == 0) {
show_help(stdout);
return 0;
}
if (strcmp(cmd, "config") == 0) {
if (argc < 3) {
die("error: missing a config property");
}
verify_argument_spelling(
argv[2],
valid_config_properties,
STACK_LEN(valid_config_properties)
);
}
if (strcmp(cmd, "set") == 0) {
if (argc < 3) {
die("error: missing a component name");
}
if (argc < 4) {
die("error: missing a component property");
}
verify_argument_spelling(
argv[3],
valid_set_properties,
STACK_LEN(valid_set_properties)
);
}
int cmd_len = 0;
for (int i = 1; i < argc; i++) {
cmd_len += strlen(argv[i]);
}
cmd_len += argc;
char* cmd_str = (char*)malloc(sizeof(char) * (cmd_len + 1));
int start = 0;
for (int i = 1; i < argc; i++) {
size_t arg_len = strlen(argv[i]);
memcpy(cmd_str + start, argv[i], arg_len);
cmd_str[start + arg_len] = '\201';
start += arg_len + 1;
}
cmd_str[cmd_len-1] = '\n';
cmd_str[cmd_len] = '\0';
mkfifo(PIPE_PATH, 0666);
FILE* named_pipe = fopen(PIPE_PATH, "w");
fwrite(cmd_str, sizeof(char), cmd_len, named_pipe);
fclose(named_pipe);
return 0;
}
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