c339c7f7b3
Similar code to unpack embedded data is used to decompress usage messages, embedded scripts and the config file (in the non-default bbconfig applet). Moving this code to a common function reduces the size of the default build and hides more of the internals of libarchive. function old new delta unpack_bz2_data - 135 +135 bb_show_usage 137 157 +20 get_script_content 32 47 +15 unpack_scripts 119 - -119 unpack_usage_messages 124 - -124 ------------------------------------------------------------------------------ (add/remove: 1/2 grow/shrink: 2/0 up/down: 170/-243) Total: -73 bytes Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* This file was released into the public domain by Paul Fox.
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*/
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//config:config BBCONFIG
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//config: bool "bbconfig (9.7 kb)"
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//config: default n
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//config: help
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//config: The bbconfig applet will print the config file with which
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//config: busybox was built.
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//config:
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//config:config FEATURE_COMPRESS_BBCONFIG
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//config: bool "Compress bbconfig data"
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//config: default y
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//config: depends on BBCONFIG
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//config: help
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//config: Store bbconfig data in compressed form, uncompress them on-the-fly
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//config: before output.
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//config:
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//config: If you have a really tiny busybox with few applets enabled (and
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//config: bunzip2 isn't one of them), the overhead of the decompressor might
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//config: be noticeable. Also, if you run executables directly from ROM
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//config: and have very little memory, this might not be a win. Otherwise,
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//config: you probably want this.
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//applet:IF_BBCONFIG(APPLET(bbconfig, BB_DIR_BIN, BB_SUID_DROP))
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//kbuild:lib-$(CONFIG_BBCONFIG) += bbconfig.o
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//usage:#define bbconfig_trivial_usage
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//usage: ""
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//usage:#define bbconfig_full_usage "\n\n"
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//usage: "Print the config file used by busybox build"
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#include "libbb.h"
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#include "bbconfigopts.h"
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#if ENABLE_FEATURE_COMPRESS_BBCONFIG
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# include "bb_archive.h"
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# include "bbconfigopts_bz2.h"
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#endif
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int bbconfig_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int bbconfig_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
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{
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#if ENABLE_FEATURE_COMPRESS_BBCONFIG
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const char *outbuf = unpack_bz2_data(bbconfig_config_bz2,
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sizeof(bbconfig_config_bz2), sizeof(bbconfig_config));
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if (outbuf) {
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full_write1_str(outbuf);
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}
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#else
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full_write1_str(bbconfig_config);
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#endif
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return 0;
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}
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