mirror of
https://github.com/kdave/btrfs-progs
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btrfs-progs: move help implemetnation to own file
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba
parent
1c880f34f1
commit
a52537a594
96
help.c
96
help.c
@ -18,6 +18,7 @@
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include <getopt.h>
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#include "commands.h"
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#include "utils.h"
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@ -28,6 +29,101 @@
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#define USAGE_OPTIONS 4U
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#define USAGE_LISTING 8U
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static char argv0_buf[ARGV0_BUF_SIZE] = "btrfs";
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const char *get_argv0_buf(void)
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{
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return argv0_buf;
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}
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void fixup_argv0(char **argv, const char *token)
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{
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int len = strlen(argv0_buf);
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snprintf(argv0_buf + len, sizeof(argv0_buf) - len, " %s", token);
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argv[0] = argv0_buf;
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}
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void set_argv0(char **argv)
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{
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strncpy(argv0_buf, argv[0], sizeof(argv0_buf));
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argv0_buf[sizeof(argv0_buf) - 1] = 0;
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}
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int check_argc_exact(int nargs, int expected)
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{
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if (nargs < expected)
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fprintf(stderr, "%s: too few arguments\n", argv0_buf);
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if (nargs > expected)
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fprintf(stderr, "%s: too many arguments\n", argv0_buf);
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return nargs != expected;
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}
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int check_argc_min(int nargs, int expected)
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{
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if (nargs < expected) {
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fprintf(stderr, "%s: too few arguments\n", argv0_buf);
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return 1;
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}
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return 0;
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}
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int check_argc_max(int nargs, int expected)
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{
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if (nargs > expected) {
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fprintf(stderr, "%s: too many arguments\n", argv0_buf);
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return 1;
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}
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return 0;
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}
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/*
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* Preprocess @argv with getopt_long to reorder options and consume the "--"
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* option separator.
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* Unknown short and long options are reported, optionally the @usage is printed
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* before exit.
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*/
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void clean_args_no_options(int argc, char *argv[], const char * const *usagestr)
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{
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static const struct option long_options[] = {
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{NULL, 0, NULL, 0}
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};
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while (1) {
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int c = getopt_long(argc, argv, "", long_options, NULL);
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if (c < 0)
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break;
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switch (c) {
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default:
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if (usagestr)
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usage(usagestr);
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}
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}
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}
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/*
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* Same as clean_args_no_options but pass through arguments that could look
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* like short options. Eg. reisze which takes a negative resize argument like
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* '-123M' .
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*
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* This accepts only two forms:
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* - "-- option1 option2 ..."
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* - "option1 option2 ..."
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*/
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void clean_args_no_options_relaxed(int argc, char *argv[], const char * const *usagestr)
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{
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if (argc <= 1)
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return;
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if (strcmp(argv[1], "--") == 0)
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optind = 2;
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}
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static int do_usage_one_command(const char * const *usagestr,
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unsigned int flags, FILE *outf)
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{
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98
utils.c
98
utils.c
@ -37,7 +37,6 @@
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#include <sys/vfs.h>
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#include <sys/statfs.h>
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#include <linux/magic.h>
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#include <getopt.h>
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#include <sys/utsname.h>
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#include <linux/version.h>
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@ -51,7 +50,6 @@
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#include "volumes.h"
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#include "ioctl.h"
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#include "commands.h"
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#include "help.h"
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#ifndef BLKDISCARD
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#define BLKDISCARD _IO(0x12,119)
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@ -59,63 +57,11 @@
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static int btrfs_scan_done = 0;
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static char argv0_buf[ARGV0_BUF_SIZE] = "btrfs";
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static int rand_seed_initlized = 0;
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static unsigned short rand_seed[3];
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struct btrfs_config bconf;
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const char *get_argv0_buf(void)
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{
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return argv0_buf;
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}
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void fixup_argv0(char **argv, const char *token)
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{
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int len = strlen(argv0_buf);
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snprintf(argv0_buf + len, sizeof(argv0_buf) - len, " %s", token);
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argv[0] = argv0_buf;
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}
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void set_argv0(char **argv)
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{
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strncpy(argv0_buf, argv[0], sizeof(argv0_buf));
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argv0_buf[sizeof(argv0_buf) - 1] = 0;
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}
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int check_argc_exact(int nargs, int expected)
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{
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if (nargs < expected)
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fprintf(stderr, "%s: too few arguments\n", argv0_buf);
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if (nargs > expected)
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fprintf(stderr, "%s: too many arguments\n", argv0_buf);
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return nargs != expected;
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}
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int check_argc_min(int nargs, int expected)
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{
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if (nargs < expected) {
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fprintf(stderr, "%s: too few arguments\n", argv0_buf);
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return 1;
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}
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return 0;
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}
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int check_argc_max(int nargs, int expected)
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{
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if (nargs > expected) {
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fprintf(stderr, "%s: too many arguments\n", argv0_buf);
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return 1;
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}
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return 0;
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}
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/*
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* Discard the given range in one go
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*/
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@ -4070,50 +4016,6 @@ int string_is_numerical(const char *str)
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return 1;
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}
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/*
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* Preprocess @argv with getopt_long to reorder options and consume the "--"
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* option separator.
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* Unknown short and long options are reported, optionally the @usage is printed
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* before exit.
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*/
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void clean_args_no_options(int argc, char *argv[], const char * const *usagestr)
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{
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static const struct option long_options[] = {
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{NULL, 0, NULL, 0}
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};
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while (1) {
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int c = getopt_long(argc, argv, "", long_options, NULL);
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if (c < 0)
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break;
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switch (c) {
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default:
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if (usagestr)
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usage(usagestr);
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}
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}
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}
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/*
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* Same as clean_args_no_options but pass through arguments that could look
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* like short options. Eg. reisze which takes a negative resize argument like
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* '-123M' .
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*
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* This accepts only two forms:
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* - "-- option1 option2 ..."
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* - "option1 option2 ..."
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*/
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void clean_args_no_options_relaxed(int argc, char *argv[], const char * const *usagestr)
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{
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if (argc <= 1)
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return;
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if (strcmp(argv[1], "--") == 0)
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optind = 2;
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}
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/* Subvolume helper functions */
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/*
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* test if name is a correct subvolume name
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