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fix ASCII issues, not a great fix but a fix

This commit is contained in:
dtb 2022-11-01 16:18:04 -04:00
parent 4500a05757
commit c20f3d08d3
2 changed files with 20 additions and 5 deletions
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2
str/str.1
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@ -26,7 +26,7 @@ Str will print a message to standard error and exit unsuccessfully if used impro
There's no way of knowing which argument failed the test without re-testing arguments individually.
.PP
If a character in a string isn't valid ASCII the behavior of this program is undefined.
If a character in a string isn't valid ASCII str will exit unsuccessfully.
.SH SEE ALSO

23
str/str.c
View File

@ -1,8 +1,7 @@
#include <ctype.h>
#include <stddef.h> /* NULL */
#include <stdio.h> /* fprintf(3) */
#include <string.h> /* strcmp(3) */
#ifdef DONT_USE_SYSTEM_SYSEXITS
#if defined DONT_USE_SYSTEM_SYSEXITS
# include "../include/sysexits.h" /* EX_USAGE */
#else
# include <sysexits.h> /* EX_USAGE */
@ -11,9 +10,22 @@
static char *program_name = "str";
/* don't use this */
#include "isempty.c"
/* #include "isempty.c" */
/* An isempty() won't work; see implementation - the default behavior of str(1)
* is to return 1, so it would return 1 (false) no matter what. I'm not adding
* a special case, just do something like `! str isvalue "$input"` in the
* higher level.
* However, if you wanna make it work, the file is included, just hack on this
* source file after removing the comment on the include. */
#include <ctype.h>
#include "isvalue.c"
/* This is a special addition to the command that lets `str isvalue "$input"`
* function as a lightweight replacement to the common `test -n "$input"` or
* `[ -n "$input" ]`. This will speed up your shellscript execution by a tad
* ONLY if test(1) isn't already built into your shell (most of the time, it
* is, and saves you the overhead of spawning a new process, which is greater
* than the savings of switching from test(1) to this program). */
static struct {
char *name;
@ -58,7 +70,10 @@ usage: fprintf(stderr, "Usage: %s [type] [string...]\n",
pass: for(argv += 2, r = 1; *argv != NULL; ++argv)
for(i = 0; argv[0][i] != '\0'; ++i)
if(!ctypes[ctype].f(argv[0][i]))
/* First checks if argv[0][i] is valid ASCII; ctypes(3)
* don't handle non-ASCII.
* This is bad. */
if(argv[0][i] < 0x80 && !ctypes[ctype].f(argv[0][i]))
return 1;
else
r = 0;