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#include <assert.h>
#include <ctype.h>
#include <dirent.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "entry.h"
#include "group.h"
#define BUF_LEN 1024 //maybe move this line to the header file
#define MAX_ARGS 5
//public
void cfg_interp();
void check_line(char *buffer);
//private
void handle_fname(char *path, char *group);
int search_ch(char *str, char c);
int wild_cmp(char *wild, char *literal);
void cfg_interp(){
FILE *fp;
char buffer[BUF_LEN];
GROUP **g;
ENTRY **e;
int count;
int e_count;
int i;
int j;
//TODO have this check in certain locations for a config file, give error message if "config" does not exist
fp = fopen("config", "r");
assert(fp != NULL);
//Read each line of "config"
while(fgets(buffer, BUF_LEN, fp)){
check_line(buffer);
}
/*
//DEBUG: test to see if the list was added to properly
g = get_groups();
count = get_gcount();
for(i = 0; i < count; i++){
printf("Looking at group %s\n", get_gname(g[i]));
e_count = get_ecount(g[i]);
e = get_entries(get_ghead(g[i]), e_count);
for(j = 0; j < e_count; j++){
printf("\t%s\n", get_ename(e[j]));
}
}
//END DEBUG
*/
fclose(fp);
return;
}
void check_line(char *buffer){
char *delims = " \t\n";
char *tok = strtok(buffer, delims);
char *args[MAX_ARGS];
GROUP **g;
int g_count;
int i;
//initialize args to NULL
for(i = 0; i < MAX_ARGS; i++){
args[i] = NULL;
}
i = 0;
//record all arguments in the line
while(tok != NULL){
if(i >= MAX_ARGS){
printf("Error: too many arguments\n");
return;
}
args[i] = tok;
tok = strtok(NULL, delims);
i++;
}
//add entry(ies) to a group: first arg is the file(s), second arg is the group to add to
//TODO add potential dash functions
//TODO account for spaces in file name
//TODO add support for "-R" recursive adding
//TODO add sorting functionality
if(!(strcmp(args[0], "add"))) handle_fname(args[1], args[2]);
//create a new group
if(!(strcmp(args[0], "addGroup"))) group_add(args[1], NULL);
//set a group's launcher (this requires pulling down the existing groups and finding the one that args[1] mentions)
if(!(strcmp(args[0], "setLauncher"))){
g = get_groups();
g_count = get_gcount();
//look for matching existing group
for(i = 0; i < g_count; i++){
if(!(strcmp(get_gname(g[i]), args[1]))){
set_gprog(g[i], args[2]);
return;
}
}
//couldn't find a match
printf("Error: Group \"%s\" does not exist\n", args[1]);
}
return;
}
void handle_fname(char *path, char *group){
ENTRY *new;
char *search; //pointer for traversing path
char path_cpy[BUF_LEN];
char arg_cpy[BUF_LEN];
int plen = strlen(path);
char *dirname;
DIR *dp;
struct dirent *fname;
int i;
if(path == NULL || group == NULL){
printf("Error: too few arguments for \"add\"\n");
return;
}
//file is not recognized, perhaps it has a wildcard?
//TODO finish rewriting a more robust wildcard thingy, still doesn't work using regex
if(access(path, F_OK) == -1){
i = search_ch(path, '*');
if(i > -1){
//look for a directory
while(path[i] != '/' && (i >= 0)){
i--;
}
dirname = path;
strcpy(arg_cpy, path);
dirname[i+1] = '\0';
dp = opendir(dirname);
//the directory is real
if(dp != NULL){
while(fname = readdir(dp)){
path_cpy[0] = '\0';
strcat(path_cpy, dirname);
strcat(path_cpy, fname->d_name);
//check if path is a file (and not a directory/symlink/etc.) and regex matches
if(fname->d_type == DT_REG && !(wild_cmp(&arg_cpy[i+1], fname->d_name))){
new = create_entry(path_cpy, path_cpy);
if(new != NULL) group_add(group, new);
}
}
closedir(dp);
}
//directory is not real, report error to the user
else printf("Error: \"%s\" bad path\n", dirname);
}
}
//file name is okay
else{
new = create_entry(path, path);
if(new != NULL){
group_add(group, new);
}
}
return;
}
int search_ch(char *str, char c){
int i = 0;
while(str[i] != '\0'){
if(str[i] == c) return i;
i++;
}
return -1;
}
//return 0 if match, 1 if not
//TODO only supports one wildcard per entry
int wild_cmp(char *wild, char *literal){
int i;
while(*wild != '\0'){
//traverse until wildcard
if(*wild != '*'){
if(*wild != *literal) return 1;
wild++;
literal++;
}
//found wildcard, find the end of both names and comapre from the back
else{
i = 0;
wild++;
while(*wild != '\0'){
i++;
wild++;
}
while(*literal != '\0'){
literal++;
}
while(i > 0){
wild--;
literal--;
if(*wild != *literal) return 1;
i--;
}
return 0;
}
}
return 0;
}
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