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warp.c
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warp.c
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#include "headers.h"
#include "common.h"
void warp(char *input)
{
char temp[strlen(input) + 1];
strcpy(temp, input);
char *word = strtok(temp, " \t");
word = strtok(NULL, " \t");
char currdir[4096];
if (getcwd(currdir, 4096) == NULL)
printf(ERROR_COLOR "Error getting path." DEFAULT_COLOR "\n");
// just stay
if (word == NULL)
{
if (strcmp(currdir, rootdir) != 0)
{
strcpy(prev, currdir);
chdir(rootdir);
}
printf("%s\n", rootdir);
}
while (word != NULL)
{
if (word[strlen(word) - 1] == '\n')
word[strlen(word) - 1] = '\0';
// home directory of shell
if (strcmp(word, "~") == 0) // shell home
{
if (strcmp(currdir, rootdir) != 0)
{
strcpy(prev, currdir);
chdir(rootdir);
}
printf("%s\n", rootdir);
}
else if (strcmp(word, ".") == 0) // stay
printf("%s\n", currdir);
else if (strcmp(word, "..") == 0 || strcmp(word, "../") == 0) // parent
{
if (strcmp(currdir, "/") == 0)
printf("%s\n", currdir);
else
{
if (currdir[strlen(currdir) - 1] == '/')
currdir[strlen(currdir) - 1] = '\0';
if (word[strlen(word) - 1] == '/')
word[strlen(word) - 1] = '\0';
char *last = strrchr(currdir, '/');
int len = 1 + last - currdir;
if (len > 1)
strcpy(prev, currdir);
// strncpy(currdir, currdir, len);
currdir[len] = '\0';
// printf("should be: %s\n", currdir);
chdir(currdir);
char disp[strlen(currdir)];
strcpy(disp, currdir);
if (strlen(currdir) > 1)
disp[strlen(currdir) - 1] = '\0';
printf("%s\n", disp);
}
}
// previous directory
else if (strcmp(word, "-") == 0)
{
if (strlen(prev) == 0)
printf("OLDPWD not set\n");
else
{
printf("%s\n", prev);
chdir(prev);
}
}
// go to a particular directory
else
{
// absolute path
if (word[0] == '/')
{
// printf("eh %s\n", word);
int flag = chdir(word);
if (flag)
{
printf(ERROR_COLOR);
perror("chdir");
printf(DEFAULT_COLOR);
}
else
{
strcpy(prev, currdir);
strcpy(currdir, word);
}
printf("%s\n", currdir);
}
// relative path
else
{
char relpath[4096];
if (word[0] != '.' && word[0] != '~')
{
strcpy(relpath, "./");
strcat(relpath, word);
}
else
strcpy(relpath, word);
int flag = chdir(word);
if (flag)
{
printf(ERROR_COLOR);
perror("chdir");
printf(DEFAULT_COLOR);
}
else
{
char tempdir[4096];
if (getcwd(tempdir, 4096) == NULL)
printf(ERROR_COLOR "Error getting path." DEFAULT_COLOR "\n");
if (strcmp(tempdir, currdir) != 0)
{
strcpy(prev, currdir);
strcpy(currdir, tempdir);
}
}
printf("%s\n", currdir);
}
}
word = strtok(NULL, " \t");
}
}