| The Android Open Source Project | 88b6079 | 2009-03-03 19:28:42 -0800 | [diff] [blame] | 1 | #include <debug.h> |
| 2 | #include <cmdline.h> |
| 3 | #include <stdio.h> |
| 4 | #include <stdlib.h> |
| 5 | #include <getopt.h> |
| 6 | #include <string.h> |
| 7 | #include <ctype.h> |
| 8 | |
| 9 | extern char *optarg; |
| 10 | extern int optind, opterr, optopt; |
| 11 | |
| 12 | static struct option long_options[] = { |
| 13 | {"verbose", no_argument, 0, 'V'}, |
| 14 | {"help", no_argument, 0, 'h'}, |
| 15 | {"print-info", no_argument, 0, 'p'}, |
| 16 | {"list-needed-libs", no_argument, 0, 'n'}, |
| 17 | {"lookup", required_argument, 0, 'L'}, |
| 18 | {0, 0, 0, 0}, |
| 19 | }; |
| 20 | |
| 21 | /* This array must parallel long_options[] */ |
| 22 | static const char *descriptions[] = { |
| 23 | "print verbose output", |
| 24 | "print help screen", |
| 25 | "for each file, generate a listing of all dependencies that each symbol " |
| 26 | "satisfies", |
| 27 | "print out a list of needed libraries", |
| 28 | "provide a directory for library lookup" |
| 29 | }; |
| 30 | |
| 31 | void print_help(void) |
| 32 | { |
| 33 | fprintf(stdout, |
| 34 | "invokation:\n" |
| 35 | "\tlsd file1 [file2 file3 ... fileN] [-Ldir1 -Ldir2 ... -LdirN] " |
| 36 | "[-Vpn]\n" |
| 37 | "or\n" |
| 38 | "\tlsd -h\n\n"); |
| 39 | fprintf(stdout, "options:\n"); |
| 40 | struct option *opt = long_options; |
| 41 | const char **desc = descriptions; |
| 42 | while (opt->name) { |
| 43 | fprintf(stdout, "\t-%c\n" |
| 44 | "\t--%-15s: %s\n", |
| 45 | opt->val, |
| 46 | opt->name, |
| 47 | *desc); |
| 48 | opt++; |
| 49 | desc++; |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | int get_options(int argc, char **argv, |
| 54 | int *list_needed_libs, |
| 55 | int *info, |
| 56 | char ***dirs, |
| 57 | int *num_dirs, |
| 58 | int *verbose) |
| 59 | { |
| 60 | int c; |
| 61 | |
| 62 | ASSERT(list_needed_libs); |
| 63 | *list_needed_libs = 0; |
| 64 | ASSERT(info); |
| 65 | *info = 0; |
| 66 | ASSERT(verbose); |
| 67 | *verbose = 0; |
| 68 | ASSERT(dirs); |
| 69 | *dirs = NULL; |
| 70 | ASSERT(num_dirs); |
| 71 | int size = 0; |
| 72 | *num_dirs = 0; |
| 73 | |
| 74 | while (1) { |
| 75 | /* getopt_long stores the option index here. */ |
| 76 | int option_index = 0; |
| 77 | |
| 78 | c = getopt_long (argc, argv, |
| 79 | "VhpnL:", |
| 80 | long_options, |
| 81 | &option_index); |
| 82 | /* Detect the end of the options. */ |
| 83 | if (c == -1) break; |
| 84 | |
| 85 | if (isgraph(c)) { |
| 86 | INFO ("option -%c with value `%s'\n", c, (optarg ?: "(null)")); |
| 87 | } |
| 88 | |
| 89 | #define SET_STRING_OPTION(name) do { \ |
| 90 | ASSERT(optarg); \ |
| 91 | (*name) = strdup(optarg); \ |
| 92 | } while(0) |
| 93 | |
| 94 | switch (c) { |
| 95 | case 0: |
| 96 | /* If this option set a flag, do nothing else now. */ |
| 97 | if (long_options[option_index].flag != 0) |
| 98 | break; |
| 99 | INFO ("option %s", long_options[option_index].name); |
| 100 | if (optarg) |
| 101 | INFO (" with arg %s", optarg); |
| 102 | INFO ("\n"); |
| 103 | break; |
| 104 | case 'h': print_help(); exit(1); break; |
| 105 | case 'V': *verbose = 1; break; |
| 106 | case 'p': *info = 1; break; |
| 107 | case 'n': *list_needed_libs = 1; break; |
| 108 | case 'L': |
| 109 | { |
| 110 | if (*num_dirs == size) { |
| 111 | size += 10; |
| 112 | *dirs = (char **)REALLOC(*dirs, size * sizeof(char *)); |
| 113 | } |
| 114 | SET_STRING_OPTION(((*dirs) + *num_dirs)); |
| 115 | (*num_dirs)++; |
| 116 | } |
| 117 | break; |
| 118 | case '?': |
| 119 | /* getopt_long already printed an error message. */ |
| 120 | break; |
| 121 | |
| 122 | #undef SET_STRING_OPTION |
| 123 | |
| 124 | default: |
| 125 | FAILIF(1, "Unknown option"); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | return optind; |
| 130 | } |