diff options
Diffstat (limited to 'path.c')
| -rw-r--r-- | path.c | 267 |
1 files changed, 267 insertions, 0 deletions
@@ -0,0 +1,267 @@ +#include "config.h" + +#include <stdlib.h> +#include <stdio.h> +#include <wchar.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <errno.h> +#include <libgen.h> + +#include "fallback.h" +#include "util.h" + +#include "common.h" +#include "env.h" +#include "wutil.h" +#include "halloc.h" +#include "halloc_util.h" +#include "path.h" +#include "expand.h" + +/** + Unexpected error in path_get_path() +*/ +#define MISSING_COMMAND_ERR_MSG _( L"Error while searching for command '%ls'" ) + + + +wchar_t *path_get_path( void *context, const wchar_t *cmd ) +{ + wchar_t *path; + + CHECK( cmd, 0 ); + + debug( 3, L"path_get_path( '%ls' )", cmd ); + + if(wcschr( cmd, L'/' ) != 0 ) + { + if( waccess( cmd, X_OK )==0 ) + { + struct stat buff; + wstat( cmd, &buff ); + if( S_ISREG(buff.st_mode) ) + return halloc_wcsdup( context, cmd ); + else + return 0; + } + } + else + { + path = env_get(L"PATH"); + if( path == 0 ) + { + if( contains_str( PREFIX L"/bin", L"/bin", L"/usr/bin", (void *)0 ) ) + { + path = L"/bin" ARRAY_SEP_STR L"/usr/bin"; + } + else + { + path = L"/bin" ARRAY_SEP_STR L"/usr/bin" ARRAY_SEP_STR PREFIX L"/bin"; + } + } + + /* + Allocate string long enough to hold the whole command + */ + wchar_t *new_cmd = halloc( context, sizeof(wchar_t)*(wcslen(cmd)+wcslen(path)+2) ); + /* + We tokenize a copy of the path, since strtok modifies + its arguments + */ + wchar_t *path_cpy = wcsdup( path ); + wchar_t *nxt_path = path; + wchar_t *state; + + if( (new_cmd==0) || (path_cpy==0) ) + { + DIE_MEM(); + } + + for( nxt_path = wcstok( path_cpy, ARRAY_SEP_STR, &state ); + nxt_path != 0; + nxt_path = wcstok( 0, ARRAY_SEP_STR, &state) ) + { + int path_len = wcslen( nxt_path ); + wcscpy( new_cmd, nxt_path ); + if( new_cmd[path_len-1] != L'/' ) + { + new_cmd[path_len++]=L'/'; + } + wcscpy( &new_cmd[path_len], cmd ); + if( waccess( new_cmd, X_OK )==0 ) + { + struct stat buff; + if( wstat( new_cmd, &buff )==-1 ) + { + if( errno != EACCES ) + { + wperror( L"stat" ); + } + continue; + } + if( S_ISREG(buff.st_mode) ) + { + free( path_cpy ); + return new_cmd; + } + } + else + { + switch( errno ) + { + case ENOENT: + case ENAMETOOLONG: + case EACCES: + case ENOTDIR: + break; + default: + { + debug( 1, + MISSING_COMMAND_ERR_MSG, + new_cmd ); + wperror( L"access" ); + } + } + } + } + free( path_cpy ); + + } + return 0; +} + + +wchar_t *path_get_cdpath( void *context, wchar_t *dir ) +{ + wchar_t *res = 0; + + if( !dir ) + return 0; + + + if( dir[0] == L'/'|| (wcsncmp( dir, L"./", 2 )==0) ) + { + struct stat buf; + if( wstat( dir, &buf ) == 0 ) + { + if( S_ISDIR(buf.st_mode) ) + { + res = halloc_wcsdup( context, dir ); + } + } + } + else + { + wchar_t *path; + wchar_t *path_cpy; + wchar_t *nxt_path; + wchar_t *state; + wchar_t *whole_path; + + path = env_get(L"CDPATH"); + + if( !path || !wcslen(path) ) + { + path = L"."; + } + + nxt_path = path; + path_cpy = wcsdup( path ); + + if( !path_cpy ) + { + DIE_MEM(); + } + + for( nxt_path = wcstok( path_cpy, ARRAY_SEP_STR, &state ); + nxt_path != 0; + nxt_path = wcstok( 0, ARRAY_SEP_STR, &state) ) + { + wchar_t *expanded_path = expand_tilde( wcsdup(nxt_path) ); + +// debug( 2, L"woot %ls\n", expanded_path ); + + int path_len = wcslen( expanded_path ); + if( path_len == 0 ) + { + free(expanded_path ); + continue; + } + + whole_path = + wcsdupcat2( expanded_path, + ( expanded_path[path_len-1] != L'/' )?L"/":L"", + dir, (void *)0 ); + + free(expanded_path ); + + struct stat buf; + if( wstat( whole_path, &buf ) == 0 ) + { + if( S_ISDIR(buf.st_mode) ) + { + res = whole_path; + halloc_register( context, whole_path ); + break; + } + } + free( whole_path ); + } + free( path_cpy ); + } + return res; +} + + +wchar_t *path_get_config( void *context) +{ + wchar_t *xdg_dir, *home; + int done = 0; + wchar_t *res = 0; + + xdg_dir = env_get( L"XDG_CONFIG_HOME" ); + if( xdg_dir ) + { + res = wcsdupcat( xdg_dir, L"/fish" ); + if( !create_directory( res ) ) + { + done = 1; + } + else + { + free( res ); + } + + } + else + { + home = env_get( L"HOME" ); + if( home ) + { + res = wcsdupcat( home, L"/.config/fish" ); + if( !create_directory( res ) ) + { + done = 1; + } + else + { + free( res ); + } + } + } + + if( done ) + { + halloc_register_function( context, &free, res ); + return res; + } + else + { + debug( 0, _(L"Unable to create a configuration directory for fish. Your personal settings will not be saved. Please set the $XDG_CONFIG_HOME variable to a directory where the current user has write access." )); + return 0; + } + +} + |