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authorDenys Vlasenko2017-08-04 16:23:42 +0200
committerDenys Vlasenko2017-08-04 16:33:23 +0200
commit727948e585cb133c32c8d42570e5524c58190307 (patch)
treef2beb48ded47f9d8ebef707516e7bbb00335b1a8 /libbb
parent7f9d62d7f5b67b6b1cc7e0b94826ba2a6e193586 (diff)
downloadbusybox-727948e585cb133c32c8d42570e5524c58190307.zip
busybox-727948e585cb133c32c8d42570e5524c58190307.tar.gz
getopt32: factor out code to treat all args as options
Working towards making getopt32() xmalloc-free function old new delta make_all_argv_opts - 58 +58 top_main 914 912 -2 getopt32 1517 1458 -59 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 0/2 up/down: 58/-61) Total: -3 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb')
-rw-r--r--libbb/Kbuild.src1
-rw-r--r--libbb/getopt32.c31
-rw-r--r--libbb/getopt_allopts.c27
3 files changed, 33 insertions, 26 deletions
diff --git a/libbb/Kbuild.src b/libbb/Kbuild.src
index 458973f..73201a6 100644
--- a/libbb/Kbuild.src
+++ b/libbb/Kbuild.src
@@ -40,7 +40,6 @@ lib-y += full_write.o
lib-y += get_console.o
lib-y += get_last_path_component.o
lib-y += get_line_from_file.o
-lib-y += getopt32.o
lib-y += getpty.o
lib-y += get_volsize.o
lib-y += herror_msg.o
diff --git a/libbb/getopt32.c b/libbb/getopt32.c
index 80f4cc0..129840c 100644
--- a/libbb/getopt32.c
+++ b/libbb/getopt32.c
@@ -6,12 +6,13 @@
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-
#if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG
# include <getopt.h>
#endif
#include "libbb.h"
+//kbuild:lib-y += getopt32.o
+
/* Documentation
uint32_t
@@ -170,21 +171,6 @@ const char *opt_complementary
Special characters:
- "-" A group consisting of just a dash forces all arguments
- to be treated as options, even if they have no leading dashes.
- Next char in this case can't be a digit (0-9), use ':' or end of line.
- Example:
-
- opt_complementary = "-:w-x:x-w"; // "-w-x:x-w" would also work,
- getopt32(argv, "wx"); // but is less readable
-
- This makes it possible to use options without a dash (./program w x)
- as well as with a dash (./program -x).
-
- NB: getopt32() will leak a small amount of memory if you use
- this option! Do not use it if there is a possibility of recursive
- getopt32() calls.
-
"--" A double dash at the beginning of opt_complementary means the
argv[1] string should always be treated as options, even if it isn't
prefixed with a "-". This is useful for special syntax in applets
@@ -373,8 +359,7 @@ getopt32(char **argv, const char *applet_opts, ...)
int max_arg = -1;
#define SHOW_USAGE_IF_ERROR 1
-#define ALL_ARGV_IS_OPTS 2
-#define FIRST_ARGV_IS_OPT 4
+#define FIRST_ARGV_IS_OPT 2
int spec_flgs = 0;
@@ -486,8 +471,7 @@ getopt32(char **argv, const char *applet_opts, ...)
if (c == '-') {
spec_flgs |= FIRST_ARGV_IS_OPT;
s++;
- } else
- spec_flgs |= ALL_ARGV_IS_OPTS;
+ }
} else {
min_arg = c - '0';
s++;
@@ -551,9 +535,9 @@ getopt32(char **argv, const char *applet_opts, ...)
opt_complementary = NULL;
va_end(p);
- if (spec_flgs & (FIRST_ARGV_IS_OPT | ALL_ARGV_IS_OPTS)) {
+ if (spec_flgs & FIRST_ARGV_IS_OPT) {
pargv = argv + 1;
- while (*pargv) {
+ if (*pargv) {
if (pargv[0][0] != '-' && pargv[0][0] != '\0') {
/* Can't use alloca: opts with params will
* return pointers to stack!
@@ -563,9 +547,6 @@ getopt32(char **argv, const char *applet_opts, ...)
strcpy(pp + 1, *pargv);
*pargv = pp;
}
- if (!(spec_flgs & ALL_ARGV_IS_OPTS))
- break;
- pargv++;
}
}
diff --git a/libbb/getopt_allopts.c b/libbb/getopt_allopts.c
new file mode 100644
index 0000000..a67d2b7
--- /dev/null
+++ b/libbb/getopt_allopts.c
@@ -0,0 +1,27 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Copyright (C) 2017 Denys Vlasenko
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+#include "libbb.h"
+
+//kbuild:lib-y += getopt_allopts.o
+
+void FAST_FUNC make_all_argv_opts(char **argv)
+{
+ /* Note: we skip argv[0] */
+ while (*++argv) {
+ char *p;
+
+ if (argv[0][0] == '-')
+ continue;
+ /* Neither top nor ps care if "" arg turns into "-" */
+ /*if (argv[0][0] == '\0')
+ continue;*/
+ p = xmalloc(strlen(*argv) + 2);
+ *p = '-';
+ strcpy(p + 1, *argv);
+ *argv = p;
+ }
+}