Thread: Qucik Newbie Help

Sorry to bother you with a newbie question (I have no idea of C programming...): I'm running Litestream, an alternative lightweight Shoutcast streaming utility on my server, but I would like to modify it, so that it doesn't only write the file name that is currently played to regular server logs, but also to a single text file, so I can proccess it with PHP and display a "Now Playing" window on my website.

Here's the file that needs to be modified (playlist.c)

Code:

#include <stdio.h>
#include <string.h>
#include <errno.h>

#include "stream_std.h"
#include "playlist.h"

#include "textutils.h"

extern int last_played;

FILE* open_next_file(char* _files[], int _nfiles, int* _curfile) {
	int startfile = *_curfile;
	FILE* fp;
	char message[1024];

	if (last_played) 
	{
	    stream_msg("finished playlist");
	    return(NULL); 
	}

	do {
		fp = fopen(_files[*_curfile], "r");

		if (!fp) {
			sprintf(message, "could not open %s", _files[*_curfile]);
			stream_err(message);
		}
		else {
			sprintf(message, "opened %s", _files[*_curfile]);
			stream_msg(message);
		}

		*_curfile = (*_curfile + 1) % _nfiles;

		/* check for playlist wrap-around */
		if (0 == *_curfile) 
			last_played = 1;

		if (fp)
			break;

		if (*_curfile == startfile) {
			stream_msg("no reasonable files found");
			return(NULL);
		}
	} while (!fp);

	return(fp);
}

playlist* read_playlist(const char* _filename) {
	FILE* fp;
	playlist* list;

	char filename[1024];
	char comparison[1024];

	list = (playlist*) malloc(sizeof(playlist));
	list->used = 0;
	list->size = 16;
	list->names = (char**) malloc(sizeof(char*) * list->size);

	/* test for filename of *.mp3 */
	strncpy(filename, _filename, 1024);
	strncpy(comparison, stripspaces(filename, LEADING | TRAILING), 1024);
	if ((strlen(comparison) > 4) && 
	    !strncmp(comparison + (strlen(comparison)-4), ".mp3", 1020)) {
	    /* found a simple mp3 file */
	    if (list->used == list->size) {
		list->size *= 2;
		list->names = (char**) realloc(list->names, sizeof(char*) * list->size);
	    }
	    list->names[list->used++] = strdup(stripspaces(filename, LEADING | TRAILING));
	} else {
	    if (!(fp = fopen(_filename, "r")))
		return(NULL);

	    while (!feof(fp) && !ferror(fp)) {
		if (!(fgets(filename, sizeof(filename), fp)))
		    break;

		if (list->used == list->size) {
		    list->size *= 2;
		    list->names = (char**) realloc(list->names, sizeof(char*) * list->size);
		}
		list->names[list->used++] = strdup(stripspaces(filename, LEADING | TRAILING));
	    }
	    fclose(fp);
	}
	return(list);
}

Thanks a lot for you help in advance!

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