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/**
* @file client.c
*
* Sample client using the libbemenu.
* Also usable as dmenu replacement.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stddef.h>
#include <assert.h>
#include <bemenu.h>
static ptrdiff_t getLine(char **outLine, size_t *outAllocated, FILE *stream)
{
size_t len = 0, allocated;
char *s, *buffer;
assert(outLine != NULL);
assert(outAllocated != NULL);
if (stream == NULL || feof(stream) || ferror(stream))
return -1;
allocated = *outAllocated;
buffer = *outLine;
if (buffer == NULL || allocated == 0) {
if (!(buffer = calloc(1, (allocated = 1024) + 1)))
return -1;
}
for (s = buffer;;) {
if (fgets(s, allocated - (s - buffer), stream) == NULL) {
*outAllocated = allocated;
*outLine = buffer;
return -1;
}
len = strlen(s);
if (feof(stream))
break;
if (len > 0 && s[len - 1] == '\n')
break;
if (len + 1 >= allocated - (s - buffer)) {
void *tmp = realloc(buffer, 2 * allocated);
if (!tmp)
break;
buffer = tmp;
s = buffer + allocated - 1;
memset(s, 0, allocated - (s - buffer));
allocated *= 2;
} else {
s += len;
}
}
*outAllocated = allocated;
*outLine = buffer;
if (s[len - 1] == '\n')
s[len - 1] = 0;
return s - buffer + len;
}
static void readItemsToMenuFromStdin(bmMenu *menu)
{
ptrdiff_t len;
size_t size = 0;
char *line = NULL;
while ((len = getLine(&line, &size, stdin)) != -1) {
bmItem *item = bmItemNew((len > 0 ? line : NULL));
if (!item)
break;
bmMenuAddItem(menu, item);
}
if (line)
free(line);
}
/**
* Main method
*
* This function gives and takes the life of our program.
*
* @param argc Number of arguments from command line
* @param argv Pointer to array of the arguments
* @return exit status of the program
*/
int main(int argc, char **argv)
{
(void)argc, (void)argv;
bmMenu *menu = bmMenuNew(BM_DRAW_MODE_CURSES);
if (!menu)
return EXIT_FAILURE;
bmMenuSetTitle(menu, "bemenu");
readItemsToMenuFromStdin(menu);
bmKey key;
unsigned int unicode;
int status = 0;
do {
bmMenuRender(menu);
key = bmMenuGetKey(menu, &unicode);
} while ((status = bmMenuRunWithKey(menu, key, unicode)) == BM_RUN_RESULT_RUNNING);
if (status == BM_RUN_RESULT_SELECTED) {
bmItem *item = bmMenuGetSelectedItem(menu);
if (item)
printf("%s\n", bmItemGetText(item));
}
bmMenuFree(menu);
return (status == BM_RUN_RESULT_SELECTED ? EXIT_SUCCESS : EXIT_FAILURE);
}
/* vim: set ts=8 sw=4 tw=0 :*/
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