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make __paginate more robust

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This commit is contained in:
Gavin Hayes 2024-04-16 02:50:08 -04:00
parent 2a2c1ad806
commit 7eaa6a0061
1 changed files with 20 additions and 17 deletions
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37
libc/x/paginate.c
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@ -16,14 +16,16 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/dce.h"
#include "libc/calls/calls.h"
#include "libc/calls/syscall_support-nt.internal.h"
#include "libc/dce.h"
#include "libc/intrin/safemacros.internal.h"
#include "libc/limits.h"
#include "libc/mem/gc.h"
#include "libc/runtime/runtime.h"
#include "libc/str/str.h"
#include "libc/temp.h"
#include "libc/x/x.h"
/**
* Displays wall of text in terminal with pagination.
@ -31,8 +33,10 @@
void __paginate(int fd, const char *s) {
int tfd, pid;
char *args[3] = {0};
char tmppath[PATH_MAX-32] = "/tmp/paginate.XXXXXX";
char tmppath[] = "/tmp/paginate.XXXXXX";
char progpath[PATH_MAX];
char16_t widepath[PATH_MAX];
int n;
if (strcmp(nulltoempty(getenv("TERM")), "dumb") && isatty(0) && isatty(1) &&
((args[0] = commandv("less", progpath, sizeof(progpath))) ||
(args[0] = commandv("more", progpath, sizeof(progpath))) ||
@ -42,22 +46,21 @@ void __paginate(int fd, const char *s) {
write(tfd, s, strlen(s));
close(tfd);
args[1] = tmppath;
if (IsWindows() && strcmp(args[0], "/C/Windows/System32/more.com") == 0) {
char16_t widepath[PATH_MAX];
__mkntpath(tmppath, widepath);
tprecode16to8(tmppath, sizeof(tmppath), widepath);
}
if ((pid = fork()) != -1) {
putenv("LC_ALL=C.UTF-8");
putenv("LESSCHARSET=utf-8");
putenv("LESS=-RS");
if (!pid) {
execv(args[0], args);
_Exit(127);
if (!IsWindows() || strcasecmp(args[0], "/C/Windows/System32/more.com") ||
(((n = __mkntpath(tmppath, widepath)) != -1) &&
(args[1] = gc(utf16to8(widepath, n, 0))))) {
if ((pid = fork()) != -1) {
putenv("LC_ALL=C.UTF-8");
putenv("LESSCHARSET=utf-8");
putenv("LESS=-RS");
if (!pid) {
execv(args[0], args);
_Exit(127);
}
waitpid(pid, 0, 0);
unlink(tmppath);
return;
}
waitpid(pid, 0, 0);
unlink(tmppath);
return;
}
unlink(tmppath);
}