From 8dff01d06a7ebd7330e3a1dd1ba47b3c74ee7dfb Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Thu, 12 Mar 2015 17:48:34 +0100 Subject: libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko --- miscutils/crond.c | 4 ++-- miscutils/dc.c | 6 +++--- miscutils/devfsd.c | 10 ++++------ miscutils/fbsplash.c | 2 +- miscutils/i2c_tools.c | 4 ++-- miscutils/last.c | 6 +++--- miscutils/man.c | 4 ++-- 7 files changed, 17 insertions(+), 19 deletions(-) (limited to 'miscutils') diff --git a/miscutils/crond.c b/miscutils/crond.c index 3659b9a6f..eb327f855 100644 --- a/miscutils/crond.c +++ b/miscutils/crond.c @@ -438,14 +438,14 @@ static void load_crontab(const char *fileName) log5("user:%s entry:%s", fileName, parser->data); /* check if line is setting MAILTO= */ - if (0 == strncmp(tokens[0], "MAILTO=", 7)) { + if (is_prefixed_with(tokens[0], "MAILTO=")) { #if ENABLE_FEATURE_CROND_CALL_SENDMAIL free(mailTo); mailTo = (tokens[0][7]) ? xstrdup(&tokens[0][7]) : NULL; #endif /* otherwise just ignore such lines */ continue; } - if (0 == strncmp(tokens[0], "SHELL=", 6)) { + if (is_prefixed_with(tokens[0], "SHELL=")) { free(shell); shell = xstrdup(&tokens[0][6]); continue; diff --git a/miscutils/dc.c b/miscutils/dc.c index a7bd360d2..f94d6fa6b 100644 --- a/miscutils/dc.c +++ b/miscutils/dc.c @@ -244,9 +244,9 @@ static void stack_machine(const char *argument) o = operators; do { - const size_t name_len = strlen(o->name); - if (strncmp(o->name, argument, name_len) == 0) { - argument += name_len; + char *after_name = is_prefixed_with(argument, o->name); + if (after_name) { + argument = after_name; o->function(); goto next; } diff --git a/miscutils/devfsd.c b/miscutils/devfsd.c index 96ffe0738..5a6aec6bd 100644 --- a/miscutils/devfsd.c +++ b/miscutils/devfsd.c @@ -1405,7 +1405,6 @@ const char *get_old_name(const char *devname, unsigned int namelen, int indexx; const char *pty1; const char *pty2; - size_t len; /* 1 to 5 "scsi/" , 6 to 9 "ide/host", 10 sbp/, 11 vcc/, 12 pty/ */ static const char *const fmt[] = { NULL , @@ -1425,12 +1424,11 @@ const char *get_old_name(const char *devname, unsigned int namelen, }; for (trans = translate_table; trans->match != NULL; ++trans) { - len = strlen(trans->match); - - if (strncmp(devname, trans->match, len) == 0) { + char *after_match = is_prefixed_with(devname, trans->match); + if (after_match) { if (trans->format == NULL) - return devname + len; - sprintf(buffer, trans->format, devname + len); + return after_match; + sprintf(buffer, trans->format, after_match); return buffer; } } diff --git a/miscutils/fbsplash.c b/miscutils/fbsplash.c index 7b695b26f..77033c258 100644 --- a/miscutils/fbsplash.c +++ b/miscutils/fbsplash.c @@ -516,7 +516,7 @@ int fbsplash_main(int argc UNUSED_PARAM, char **argv) // handle a case when we have many buffered lines // already in the pipe while ((num_buf = xmalloc_fgetline(fp)) != NULL) { - if (strncmp(num_buf, "exit", 4) == 0) { + if (is_prefixed_with(num_buf, "exit")) { DEBUG_MESSAGE("exit"); break; } diff --git a/miscutils/i2c_tools.c b/miscutils/i2c_tools.c index 90d1e1e14..03bb03974 100644 --- a/miscutils/i2c_tools.c +++ b/miscutils/i2c_tools.c @@ -1198,7 +1198,7 @@ static void NORETURN list_i2c_busses_and_exit(void) if (subde->d_name[0] == '.') continue; - if (strncmp(subde->d_name, "i2c-", 4) == 0) { + if (is_prefixed_with(subde->d_name, "i2c-")) { snprintf(path, NAME_MAX, "%s/%s/device/%s/name", i2cdev_path, de->d_name, @@ -1229,7 +1229,7 @@ found: if (rv != 1) continue; - if (strncmp(name, "ISA", 3) == 0) + if (is_prefixed_with(name, "ISA")) adt = ADT_ISA; else adt = i2cdetect_get_funcs(bus); diff --git a/miscutils/last.c b/miscutils/last.c index 24f6e1c78..a144c7e47 100644 --- a/miscutils/last.c +++ b/miscutils/last.c @@ -87,11 +87,11 @@ int last_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM) if (++n > 0) ut.ut_type = n != 3 ? n : SHUTDOWN_TIME; #else - if (strncmp(ut.ut_user, "shutdown", 8) == 0) + if (is_prefixed_with(ut.ut_user, "shutdown")) ut.ut_type = SHUTDOWN_TIME; - else if (strncmp(ut.ut_user, "reboot", 6) == 0) + else if (is_prefixed_with(ut.ut_user, "reboot")) ut.ut_type = BOOT_TIME; - else if (strncmp(ut.ut_user, "runlevel", 8) == 0) + else if (is_prefixed_with(ut.ut_user, "runlevel")) ut.ut_type = RUN_LVL; #endif } else { diff --git a/miscutils/man.c b/miscutils/man.c index c39870e67..58ed81955 100644 --- a/miscutils/man.c +++ b/miscutils/man.c @@ -66,7 +66,7 @@ static int run_pipe(const char *pager, char *man_filename, int man, int level) goto ordinary_manpage; line = xmalloc_open_zipped_read_close(man_filename, NULL); - if (!line || strncmp(line, ".so ", 4) != 0) { + if (!line || !is_prefixed_with(line, ".so ")) { free(line); goto ordinary_manpage; } @@ -228,7 +228,7 @@ int man_main(int argc UNUSED_PARAM, char **argv) if (!token[1]) continue; if (strcmp("DEFINE", token[0]) == 0) { - if (strncmp("pager", token[1], 5) == 0) { + if (is_prefixed_with("pager", token[1])) { pager = xstrdup(skip_whitespace(token[1]) + 5); } } else -- cgit v1.2.3