mirror of https://gitlab.com/klmp200/fish.git
173 lines
2.9 KiB
C
173 lines
2.9 KiB
C
// Created by Arthur Amalvy
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#include <stdio.h>
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#include <stdlib.h>
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#include <dirent.h>
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#include <string.h>
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#include "fish_core.h"
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#include "fish_globbing.h"
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WordList * fishExpand(WordList *wordList) {
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if(wordList->size > 1){
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int i;
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WordList* newWordList = createWordList();// creating the list to return
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if(newWordList == NULL){//crash when the allocation is unsuccessful
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crash();
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}
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addEndWordList(newWordList, wordList->first->word);//copy the command into the returning word list
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WordListElement* tempElement = wordList->first->next; //temporary nav element
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for(i=1; i<wordList->size; i++){
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//TODO : optimize the stringContains() function to test for a list of characters
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//test if we have to expand a string or not, for optimization purposes
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if(stringContains(tempElement->word, '*') || stringContains(tempElement->word, '?')){
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concatWordList(newWordList, expandWord(tempElement->word));
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}
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//If we dont have to expand, add the current word unchanged to the new list
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else{
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addEndWordList(newWordList, tempElement->word);
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}
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tempElement = tempElement->next;
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}
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freeWordList(wordList);
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return newWordList;
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}
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else return wordList;
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}
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WordList* expandWord(char* word){
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if(!stringContains(word, '/')){
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return getFiles((char*) "./", word);
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}
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else{
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return getFiles(word, "*");//temporary
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//return();
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}
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}
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WordList* getFiles(char* path, char* wildcardedString){
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DIR* directory;
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dirent* dir;
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WordList* files = createWordList();
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if((directory = opendir(path)) != NULL){
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while((dir = readdir(directory)) != NULL){
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if(strcmp(dir->d_name, ".") && strcmp(dir->d_name, "..") && wildcardedStringMatches(wildcardedString, dir->d_name)){//sorry strcmp but I dont like you :(
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//dont read this, and if you do, do not complain, it's strcat's fault. you've been warned.
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char* filePath = (char*) malloc(sizeof(char) * (strlen(path) + strlen(dir->d_name)) + 1);
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if(filePath == NULL) crash();
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filePath[0] = '\0';
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strcat(filePath, path);
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strcat(filePath, dir->d_name);
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addEndWordList(files, filePath);
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free(filePath);
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}
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}
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closedir(directory); //YY U LEAK MEMORY ? NOT ON MY WATCH
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}
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return files;
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}
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int wildcardedStringMatches(char* string1, char* string2){//TODO
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int i = 0;
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char tempIChar;
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int j = 0;
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if(string1 != NULL && string2 != NULL){
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while(string1[i] != '\0' && string2[j] != '\0'){
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if(string1[i] == '*'){
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tempIChar = string1[i+1];
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while(string2[j] != tempIChar){
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j++;
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if(string2[j] == '\0' && tempIChar == '\0'){
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return 1;
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}
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}
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i++;
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}
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if(string1[i] != string2[j] && string1[i] != '?'){
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return 0;
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}
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i++;
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j++;
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}
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if(string1[i] == '\0' && string2[j] == '\0'){
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return 1;
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}
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else{
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return 0;
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}
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}
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else{
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printf("warning : fuck you, strings are considered null");
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crash();
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return 0;
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}
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}
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