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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <ini.h>
#include <cwalk.h>
#include <ftw.h>
#include <fnmatch.h>
#include <wordexp.h>
#include <sys/stat.h>
char* music_dir;
char* playlist_dir;
char* target_music_dir;
char* target_playlist_dir;
char** exclude;
int exclude_length;
char** include;
int include_length;
char* existing;
char* config_section = "default";
int buffer_size = 4096;
void mkpath(char* file_path, mode_t mode) {
for (char* p = strchr(file_path + 1, '/'); p; p = strchr(p + 1, '/')) {
*p = '\0';
//TODO: error handling
mkdir(file_path, mode);
*p = '/';
}
}
void cp(char* source_path, char* dest_path) {
FILE *source, *dest;
source = fopen(source_path, "rb");
dest = fopen(dest_path, "wb");
char buffer[buffer_size];
size_t size;
while ((size = fread(buffer, 1, buffer_size, source)))
fwrite(buffer, 1, size, dest);
fclose(source);
fclose(dest);
}
char* join_path(char* a, char* b) {
size_t size = (strlen(a) + strlen(b) + 4) * sizeof(char);
char* fullpath = (char*) malloc(size);
cwk_path_join(a, b, fullpath, size);
return fullpath;
}
char* substr(const char* src, int from) {
int fulllen = strlen(src);
char* substr = malloc((fulllen - from + 2) * sizeof(char));
strcpy(substr, &src[from]);
return substr;
}
void append(char*** dest, int* length, char* add) {
(*length)++;
size_t new_size = *length * sizeof(char*);
char** temp = malloc(new_size);
for(int i = 0; i < *length -1; i++)
temp[i] = *dest[i];
temp[*length-1] = add;
free(*dest);
*dest = temp;
}
static int handler(void* user, const char* section, const char* name, const char* value) {
if (strcmp(section, config_section) != 0) return 1;
if (0 == strcmp(name, "music_dir")) music_dir = strdup(value);
else if (0 == strcmp(name, "playlist_dir")) playlist_dir = strdup(value);
else if (0 == strcmp(name, "target_music_dir")) target_music_dir = strdup(value);
else if (0 == strcmp(name, "target_playlist_dir")) target_playlist_dir = strdup(value);
else if (0 == strcmp(name, "existing")) existing = strdup(value);
else if (0 == strcmp(name, "include")) append(&include, &include_length, strdup(value));
else if (0 == strcmp(name, "exclude")) append(&exclude, &exclude_length, strdup(value));
return 1;
}
void exit_err(char* msg) {
printf("%s exiting...\n", msg);
exit(1);
}
void load_config() {
char* home = getenv("HOME");
if(!home) exit_err("$HOME could not be read!");
char* config_file_loc = ".config/musicopy/rc.ini";
char* config_path = join_path(home, config_file_loc);
if( access(config_path, F_OK) != 0 ) exit_err("Config file could not be read!");
exclude_length = 0;
include_length = 0;
existing = strdup("");
music_dir = strdup("");
playlist_dir = strdup("");
target_music_dir = strdup("");
target_playlist_dir = strdup("");
if (ini_parse(config_path, handler, NULL) < 0) exit_err("Can't load configuration file!");
}
void expandpath(char** path) {
wordexp_t run;
wordexp(*path, &run, WRDE_NOCMD);
free(*path);
*path = strdup(run.we_wordv[0]);
}
void fix_include_exclude(char*** listv, int listc) {
int music_dir_len = strlen(music_dir);
for(int i = 0; i < listc; i++) {
char* new_path = join_path(music_dir, (*listv)[i]);
free((*listv)[i]);
(*listv)[i] = new_path;
}
}
bool duplicate(char* source, char* dest) {
if (strcmp(existing, "none") == 0) return true;
else if (strcmp(existing, "lazy") == 0) return false;
else if (strcmp(existing, "size") == 0) {
struct stat src_st, dst_st;
stat(source, &src_st);
stat(dest, &dst_st);
return src_st.st_size != dst_st.st_size;
}
else if (strcmp(existing, "hash") == 0) {
printf("compare hash\n");
}
return false;
}
void copy(const char* fullpath) {
int baselen = strlen(music_dir);
char* basepath = substr(fullpath, baselen);
char* destpath = join_path(target_music_dir, basepath);
size_t destfolder_size;
cwk_path_get_dirname(destpath, &destfolder_size);
char* destfolder = (char*) malloc(destfolder_size);
destfolder = strncpy(destfolder, destpath, destfolder_size);
mkpath(destfolder, 0775);
char* sourcepath = strdup(fullpath);
bool copy = true;
if(access(destpath, F_OK) == 0) copy = duplicate(sourcepath, destpath);
if(copy) {
cp(sourcepath, destpath);
printf("%s -> %s\n", sourcepath, destpath);
}
free(sourcepath);
}
int dir_callback(const char* path, const struct stat *sb, int tflag) {
if(tflag != FTW_F) return 0;
if (include_length > 0) {
bool includes = false;
for(int i = 0; i < include_length; i++) {
includes = fnmatch(include[i], path, 0) == 0;
if(includes) break;
}
if (!includes) return 0;
}
if (exclude_length > 0)
for(int i = 0; i < exclude_length; i++)
if(fnmatch(exclude[i], path, 0) == 0) return 0;
copy(path);
return 0;
}
void print_opts() {
printf("{\n");
printf(" \"music_dir\": \"%s\",\n", music_dir);
printf(" \"playlist_dir\": \"%s\",\n", playlist_dir);
printf(" \"target_music_dir\": \"%s\",\n", target_music_dir);
printf(" \"target_playlist_dir\": \"%s\",\n", target_playlist_dir);
printf(" \"existing\": \"%s\",\n", existing);
printf(" \"include\": [\n");
for(int i = 0; i < include_length; i++)
printf(" \"%s\"%c\n", include[i], i+1 == include_length ? ' ' : ',');
printf(" ],\n");
printf(" \"exclude\": [\n");
for(int i = 0; i < exclude_length; i++)
printf(" \"%s\"%c\n", exclude[i], i+1 == exclude_length ? ' ' : ',');
printf(" ]\n");
printf("}\n");
}
int main() {
load_config();
expandpath(&music_dir);
expandpath(&playlist_dir);
expandpath(&target_music_dir);
expandpath(&target_playlist_dir);
fix_include_exclude(&include, include_length);
fix_include_exclude(&exclude, exclude_length);
ftw(music_dir, dir_callback, 0);
return 0;
}
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