[7f389a5c] | 1 | #include "parseargs.hfa" |
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| 2 | |
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[e699eb6] | 3 | #include <stdint.h> |
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[7f389a5c] | 4 | #include <string.h> |
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[e699eb6] | 5 | #include <errno.h> |
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[3f1d9b5] | 6 | #include <unistd.h> |
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[1c893ae] | 7 | #include <assert.h> |
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| 8 | |
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[7f389a5c] | 9 | extern "C" { |
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| 10 | #include <getopt.h> |
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[3f1d9b5] | 11 | #include <sys/ioctl.h> |
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[7f389a5c] | 12 | |
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| 13 | struct FILE; |
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| 14 | extern FILE * stderr; |
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| 15 | extern FILE * stdout; |
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| 16 | |
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[3f1d9b5] | 17 | extern int fileno(FILE *stream); |
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| 18 | |
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[7f389a5c] | 19 | extern int fprintf ( FILE * stream, const char * format, ... ); |
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[53e4562] | 20 | |
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| 21 | extern long long int strtoll (const char* str, char** endptr, int base); |
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| 22 | extern unsigned long long int strtoull(const char* str, char** endptr, int base); |
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[7f6e9eb] | 23 | extern double strtod (const char* str, char** endptr); |
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[7f389a5c] | 24 | } |
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| 25 | |
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[e699eb6] | 26 | #include "common.hfa" |
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| 27 | #include "limits.hfa" |
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[3f1d9b5] | 28 | |
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[789f279] | 29 | #pragma GCC visibility push(default) |
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| 30 | |
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[433d352] | 31 | extern int cfa_args_argc __attribute__((weak)); |
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| 32 | extern char ** cfa_args_argv __attribute__((weak)); |
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| 33 | extern char ** cfa_args_envp __attribute__((weak)); |
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[7874d77] | 34 | |
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[419c434] | 35 | static void usage(char * cmd, cfa_option options[], size_t opt_count, const char * usage, FILE * out) __attribute__ ((noreturn)); |
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[80d3b1b] | 36 | //----------------------------------------------------------------------------- |
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| 37 | // checking |
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| 38 | static void check_args(cfa_option options[], size_t opt_count) { |
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| 39 | for(i; opt_count) { |
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| 40 | for(j; opt_count) { |
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| 41 | if(i == j) continue; |
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| 42 | |
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| 43 | if( options[i].short_name != '\0' |
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| 44 | && options[i].short_name == options[j].short_name) |
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[b7664a0] | 45 | abort("Parse Args error: two options have short name '%c' (%zu & %zu)", options[i].short_name, i, j); |
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[3f1d9b5] | 46 | |
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[b7664a0] | 47 | if(0 == strcmp(options[i].long_name, options[j].long_name)) abort("Parse Args error: two options have long name '%s' (%zu & %zu)", options[i].long_name, i, j); |
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[80d3b1b] | 48 | } |
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| 49 | } |
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| 50 | } |
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| 51 | |
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| 52 | |
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| 53 | //----------------------------------------------------------------------------- |
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| 54 | // Parsing args |
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[7874d77] | 55 | void parse_args( cfa_option options[], size_t opt_count, const char * usage, char ** & left ) { |
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[433d352] | 56 | if( 0p != &cfa_args_argc ) { |
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| 57 | parse_args(cfa_args_argc, cfa_args_argv, options, opt_count, usage, left ); |
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| 58 | } |
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| 59 | else { |
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| 60 | char * temp = ""; |
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| 61 | parse_args(0, &temp, options, opt_count, usage, left ); |
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| 62 | } |
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[7874d77] | 63 | } |
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| 64 | |
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[7f389a5c] | 65 | void parse_args( |
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| 66 | int argc, |
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| 67 | char * argv[], |
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| 68 | cfa_option options[], |
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| 69 | size_t opt_count, |
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| 70 | const char * usage, |
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| 71 | char ** & left |
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| 72 | ) { |
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[80d3b1b] | 73 | check_args(options, opt_count); |
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| 74 | |
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| 75 | int maxv = 'h'; |
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[1c893ae] | 76 | assert( opt_count > 0 ); |
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[80d3b1b] | 77 | char optstring[opt_count * 3] = { '\0' }; |
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| 78 | { |
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| 79 | int idx = 0; |
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| 80 | for(i; opt_count) { |
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| 81 | if (options[i].short_name) { |
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| 82 | maxv = max(options[i].short_name, maxv); |
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| 83 | optstring[idx] = options[i].short_name; |
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| 84 | idx++; |
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| 85 | if( ((intptr_t)options[i].parse) != ((intptr_t)parse_settrue) |
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| 86 | && ((intptr_t)options[i].parse) != ((intptr_t)parse_setfalse) ) { |
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| 87 | optstring[idx] = ':'; |
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| 88 | idx++; |
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| 89 | } |
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| 90 | } |
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| 91 | } |
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| 92 | optstring[idx+0] = 'h'; |
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| 93 | optstring[idx+1] = '\0'; |
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| 94 | } |
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| 95 | |
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[7f389a5c] | 96 | struct option optarr[opt_count + 2]; |
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| 97 | { |
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| 98 | int idx = 0; |
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| 99 | for(i; opt_count) { |
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| 100 | if(options[i].long_name) { |
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[80d3b1b] | 101 | options[i].val = (options[i].short_name != '\0') ? ((int)options[i].short_name) : ++maxv; |
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[7f389a5c] | 102 | optarr[idx].name = options[i].long_name; |
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| 103 | optarr[idx].flag = 0p; |
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[80d3b1b] | 104 | optarr[idx].val = options[i].val; |
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[7f389a5c] | 105 | if( ((intptr_t)options[i].parse) == ((intptr_t)parse_settrue) |
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| 106 | || ((intptr_t)options[i].parse) == ((intptr_t)parse_setfalse) ) { |
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| 107 | optarr[idx].has_arg = no_argument; |
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| 108 | } else { |
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| 109 | optarr[idx].has_arg = required_argument; |
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| 110 | } |
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| 111 | idx++; |
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| 112 | } |
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| 113 | } |
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[e699eb6] | 114 | optarr[idx+0].[name, has_arg, flag, val] = ["help", no_argument, 0, 'h']; |
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| 115 | optarr[idx+1].[name, has_arg, flag, val] = [0, no_argument, 0, 0]; |
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[7f389a5c] | 116 | } |
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| 117 | |
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| 118 | FILE * out = stderr; |
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| 119 | NEXT_ARG: |
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| 120 | for() { |
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| 121 | int idx = 0; |
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| 122 | int opt = getopt_long(argc, argv, optstring, optarr, &idx); |
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| 123 | switch(opt) { |
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| 124 | case -1: |
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| 125 | if(&left != 0p) left = argv + optind; |
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| 126 | return; |
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| 127 | case 'h': |
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| 128 | out = stdout; |
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| 129 | case '?': |
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[419c434] | 130 | usage(argv[0], options, opt_count, usage, out); |
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[7f389a5c] | 131 | default: |
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| 132 | for(i; opt_count) { |
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[80d3b1b] | 133 | if(opt == options[i].val) { |
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[7f389a5c] | 134 | const char * arg = optarg ? optarg : ""; |
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[772b300] | 135 | if( arg[0] == '=' ) { arg++; } |
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[7f389a5c] | 136 | bool success = options[i].parse( arg, options[i].variable ); |
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| 137 | if(success) continue NEXT_ARG; |
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| 138 | |
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| 139 | fprintf(out, "Argument '%s' for option %c could not be parsed\n\n", arg, (char)opt); |
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[419c434] | 140 | usage(argv[0], options, opt_count, usage, out); |
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[7f389a5c] | 141 | } |
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| 142 | } |
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| 143 | abort("Internal parse arg error\n"); |
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| 144 | } |
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| 145 | |
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| 146 | } |
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[419c434] | 147 | } |
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[7f389a5c] | 148 | |
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[419c434] | 149 | //----------------------------------------------------------------------------- |
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| 150 | // Print usage |
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| 151 | static void printopt(FILE * out, int width, int max, char sn, const char * ln, const char * help) { |
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| 152 | int hwidth = max - (11 + width); |
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| 153 | if(hwidth <= 0) hwidth = max; |
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| 154 | |
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[6f94958] | 155 | char sname[4] = { ' ', ' ', ' ', '\0' }; |
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| 156 | if(sn != '\0') { |
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| 157 | sname[0] = '-'; |
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| 158 | sname[1] = sn; |
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| 159 | sname[2] = ','; |
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| 160 | } |
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| 161 | |
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| 162 | fprintf(out, " %s --%-*s %.*s\n", sname, width, ln, hwidth, help); |
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[419c434] | 163 | for() { |
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| 164 | help += min(strlen(help), hwidth); |
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| 165 | if('\0' == *help) break; |
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| 166 | fprintf(out, "%*s%.*s\n", width + 11, "", hwidth, help); |
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| 167 | } |
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| 168 | } |
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| 169 | |
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| 170 | void print_args_usage(cfa_option options[], size_t opt_count, const char * usage, bool error) __attribute__ ((noreturn)) { |
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| 171 | usage(cfa_args_argv[0], options, opt_count, usage, error ? stderr : stdout); |
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| 172 | } |
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| 173 | |
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| 174 | void print_args_usage(int , char * argv[], cfa_option options[], size_t opt_count, const char * usage, bool error) __attribute__ ((noreturn)) { |
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| 175 | usage(argv[0], options, opt_count, usage, error ? stderr : stdout); |
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| 176 | } |
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| 177 | |
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| 178 | static void usage(char * cmd, cfa_option options[], size_t opt_count, const char * help, FILE * out) __attribute__((noreturn)) { |
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| 179 | int width = 0; |
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| 180 | { |
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| 181 | for(i; opt_count) { |
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| 182 | if(options[i].long_name) { |
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| 183 | int w = strlen(options[i].long_name); |
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| 184 | if(w > width) width = w; |
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| 185 | } |
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| 186 | } |
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| 187 | } |
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| 188 | |
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| 189 | int max_width = 1_000_000; |
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[3f1d9b5] | 190 | int outfd = fileno(out); |
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| 191 | if(isatty(outfd)) { |
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| 192 | struct winsize size; |
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| 193 | int ret = ioctl(outfd, TIOCGWINSZ, &size); |
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| 194 | if(ret < 0) abort( "ioctl error: (%d) %s\n", (int)errno, strerror(errno) ); |
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| 195 | max_width = size.ws_col; |
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| 196 | } |
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| 197 | |
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[419c434] | 198 | fprintf(out, "Usage:\n %s %s\n", cmd, help); |
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[7f389a5c] | 199 | |
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| 200 | for(i; opt_count) { |
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[3f1d9b5] | 201 | printopt(out, width, max_width, options[i].short_name, options[i].long_name, options[i].help); |
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[7f389a5c] | 202 | } |
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| 203 | fprintf(out, " -%c, --%-*s %s\n", 'h', width, "help", "print this help message"); |
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| 204 | exit(out == stdout ? 0 : 1); |
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| 205 | } |
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| 206 | |
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[419c434] | 207 | //----------------------------------------------------------------------------- |
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| 208 | // Typed argument parsing |
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[7f389a5c] | 209 | bool parse_yesno(const char * arg, bool & value ) { |
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| 210 | if(strcmp(arg, "yes") == 0) { |
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| 211 | value = true; |
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| 212 | return true; |
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| 213 | } |
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| 214 | |
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[e07187d] | 215 | if(strcmp(arg, "Y") == 0) { |
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| 216 | value = true; |
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| 217 | return true; |
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| 218 | } |
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| 219 | |
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| 220 | if(strcmp(arg, "y") == 0) { |
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| 221 | value = true; |
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| 222 | return true; |
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| 223 | } |
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| 224 | |
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[7f389a5c] | 225 | if(strcmp(arg, "no") == 0) { |
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| 226 | value = false; |
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| 227 | return true; |
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| 228 | } |
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| 229 | |
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[e07187d] | 230 | if(strcmp(arg, "N") == 0) { |
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| 231 | value = false; |
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| 232 | return true; |
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| 233 | } |
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| 234 | |
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| 235 | if(strcmp(arg, "n") == 0) { |
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| 236 | value = false; |
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| 237 | return true; |
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| 238 | } |
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| 239 | |
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[7f389a5c] | 240 | return false; |
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| 241 | } |
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| 242 | |
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[7efb322] | 243 | bool parse_truefalse(const char * arg, bool & value) { |
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[d411769c] | 244 | if(strcmp(arg, "true") == 0) { |
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| 245 | value = true; |
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| 246 | return true; |
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| 247 | } |
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| 248 | |
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| 249 | if(strcmp(arg, "false") == 0) { |
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| 250 | value = false; |
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| 251 | return true; |
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| 252 | } |
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| 253 | |
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| 254 | return false; |
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| 255 | } |
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| 256 | |
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[7f389a5c] | 257 | bool parse_settrue (const char *, bool & value ) { |
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| 258 | value = true; |
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| 259 | return true; |
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| 260 | } |
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| 261 | |
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| 262 | bool parse_setfalse(const char *, bool & value ) { |
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| 263 | value = false; |
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| 264 | return true; |
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| 265 | } |
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| 266 | |
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| 267 | bool parse(const char * arg, const char * & value ) { |
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| 268 | value = arg; |
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| 269 | return true; |
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| 270 | } |
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| 271 | |
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[7f6e9eb] | 272 | bool parse(const char * arg, int & value) { |
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| 273 | char * end; |
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| 274 | int r = strtoll(arg, &end, 10); |
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| 275 | if(*end != '\0') return false; |
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| 276 | |
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| 277 | value = r; |
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| 278 | return true; |
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| 279 | } |
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| 280 | |
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[53e4562] | 281 | bool parse(const char * arg, unsigned & value) { |
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| 282 | char * end; |
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| 283 | unsigned long long int r = strtoull(arg, &end, 10); |
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| 284 | if(*end != '\0') return false; |
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[3f1d9b5] | 285 | if(r > (unsigned)MAX) return false; |
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[53e4562] | 286 | |
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| 287 | value = r; |
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| 288 | return true; |
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| 289 | } |
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| 290 | |
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[56e8cb3] | 291 | bool parse(const char * arg, unsigned long & value) { |
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[53e4562] | 292 | char * end; |
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| 293 | unsigned long long int r = strtoull(arg, &end, 10); |
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| 294 | if(*end != '\0') return false; |
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[56e8cb3] | 295 | if(r > (unsigned long)MAX) return false; |
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[53e4562] | 296 | |
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| 297 | value = r; |
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| 298 | return true; |
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| 299 | } |
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| 300 | |
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[56e8cb3] | 301 | bool parse(const char * arg, unsigned long long & value) { |
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| 302 | char * end; |
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| 303 | unsigned long long int r = strtoull(arg, &end, 10); |
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| 304 | if(*end != '\0') return false; |
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| 305 | if(r > (unsigned long long)MAX) return false; |
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| 306 | |
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| 307 | value = r; |
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| 308 | return true; |
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| 309 | } |
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| 310 | |
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[7f6e9eb] | 311 | bool parse(const char * arg, double & value) { |
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[7f389a5c] | 312 | char * end; |
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[7f6e9eb] | 313 | double r = strtod(arg, &end); |
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[7f389a5c] | 314 | if(*end != '\0') return false; |
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| 315 | |
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| 316 | value = r; |
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| 317 | return true; |
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[56e8cb3] | 318 | } |
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