cosmopolitan/libc/x/xfixpath.c
Justine Tunney d230a01222 Make build hermetic without shell scripts
- Fix some minor issues in ar.com
- Have execve() look for `ape` command
- Rewrite NT paths using /c/ rather /??/c:/
- Replace broken GCC symlinks with .sym files
- Rewrite $PATH environment variables on startup
- Make $(APE_NO_MODIFY_SELF) the default bootloader
- Add all build command dependencies to build/bootstrap
- Get the repository mostly building from source on non-Linux
2022-05-25 13:55:57 -07:00

63 lines
2.8 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/str/str.h"
#include "libc/x/x.h"
static inline int IsAlpha(int c) {
return ('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z');
}
/**
* Fixes $PATH environment variable on Windows.
*/
void xfixpath(void) {
size_t i;
char *p, *path;
path = strdup(getenv("PATH"));
if (strstr(path, "C:\\") && strstr(path, ";")) {
// turn backslash into slash
for (p = path; *p; ++p) {
if (*p == '\\') *p = '/';
}
// turn c:/... into /c/...
if (IsAlpha(path[0]) && path[1] == ':' && path[2] == '/') {
path[1] = path[0];
path[0] = '/';
}
for (p = path, i = 0; p[i]; ++i) {
if (p[i + 0] == ';' && IsAlpha(p[i + 1]) && p[i + 2] == ':' &&
p[i + 3] == '/') {
p[i + 2] = p[i + 1];
p[i + 1] = '/';
}
}
// turn semicolon into colon
for (p = path; *p; ++p) {
if (*p == ';') *p = ':';
}
setenv("PATH", path, true);
}
free(path);
}