source: libcfa/src/parseargs.cfa@ 67bfc50

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation new-ast new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 67bfc50 was a5428bd, checked in by Thierry Delisle <tdelisle@…>, 5 years ago

Merge branch 'master' of plg.uwaterloo.ca:software/cfa/cfa-cc
  • Property mode set to 100644
File size: 4.8 KB
Line 
1#include "parseargs.hfa"
2
3#include <stdint.h>
4#include <string.h>
5#include <errno.h>
6#include <unistd.h>
7extern "C" {
8 #include <getopt.h>
9 #include <sys/ioctl.h>
10
11 struct FILE;
12 extern FILE * stderr;
13 extern FILE * stdout;
14
15 extern int fileno(FILE *stream);
16
17 extern int fprintf ( FILE * stream, const char * format, ... );
18
19 extern long long int strtoll (const char* str, char** endptr, int base);
20 extern unsigned long long int strtoull(const char* str, char** endptr, int base);
21}
22
23#include "common.hfa"
24#include "limits.hfa"
25
26extern int cfa_args_argc;
27extern char ** cfa_args_argv;
28extern char ** cfa_args_envp;
29
30void printopt(FILE * out, int width, int max, char sn, const char * ln, const char * help) {
31 int hwidth = max - (11 + width);
32 if(hwidth <= 0) hwidth = max;
33
34 fprintf(out, " -%c, --%-*s %.*s\n", sn, width, ln, hwidth, help);
35 for() {
36 help += min(strlen(help), hwidth);
37 if('\0' == *help) break;
38 fprintf(out, "%*s%.*s\n", width + 11, "", hwidth, help);
39 }
40}
41
42void parse_args( cfa_option options[], size_t opt_count, const char * usage, char ** & left ) {
43 parse_args(cfa_args_argc, cfa_args_argv, options, opt_count, usage, left );
44}
45
46void parse_args(
47 int argc,
48 char * argv[],
49 cfa_option options[],
50 size_t opt_count,
51 const char * usage,
52 char ** & left
53) {
54 struct option optarr[opt_count + 2];
55 int width = 0;
56 int max_width = 1_000_000;
57 {
58 int idx = 0;
59 for(i; opt_count) {
60 if(options[i].long_name) {
61 optarr[idx].name = options[i].long_name;
62 optarr[idx].flag = 0p;
63 optarr[idx].val = options[i].short_name;
64 if( ((intptr_t)options[i].parse) == ((intptr_t)parse_settrue)
65 || ((intptr_t)options[i].parse) == ((intptr_t)parse_setfalse) ) {
66 optarr[idx].has_arg = no_argument;
67 } else {
68 optarr[idx].has_arg = required_argument;
69 }
70 idx++;
71
72 int w = strlen(options[i].long_name);
73 if(w > width) width = w;
74 }
75 }
76 optarr[idx+0].[name, has_arg, flag, val] = ["help", no_argument, 0, 'h'];
77 optarr[idx+1].[name, has_arg, flag, val] = [0, no_argument, 0, 0];
78 }
79
80 char optstring[opt_count * 3] = { '\0' };
81 {
82 int idx = 0;
83 for(i; opt_count) {
84 optstring[idx] = options[i].short_name;
85 idx++;
86 if( ((intptr_t)options[i].parse) != ((intptr_t)parse_settrue)
87 && ((intptr_t)options[i].parse) != ((intptr_t)parse_setfalse) ) {
88 optstring[idx] = ':';
89 idx++;
90 }
91 }
92 optstring[idx+0] = 'h';
93 optstring[idx+1] = '\0';
94 }
95
96 FILE * out = stderr;
97 NEXT_ARG:
98 for() {
99 int idx = 0;
100 int opt = getopt_long(argc, argv, optstring, optarr, &idx);
101 switch(opt) {
102 case -1:
103 if(&left != 0p) left = argv + optind;
104 return;
105 case 'h':
106 out = stdout;
107 case '?':
108 goto USAGE;
109 default:
110 for(i; opt_count) {
111 if(opt == options[i].short_name) {
112 const char * arg = optarg ? optarg : "";
113 bool success = options[i].parse( arg, options[i].variable );
114 if(success) continue NEXT_ARG;
115
116 fprintf(out, "Argument '%s' for option %c could not be parsed\n\n", arg, (char)opt);
117 goto USAGE;
118 }
119 }
120 abort("Internal parse arg error\n");
121 }
122
123 }
124
125 USAGE:;
126 int outfd = fileno(out);
127 if(isatty(outfd)) {
128 struct winsize size;
129 int ret = ioctl(outfd, TIOCGWINSZ, &size);
130 if(ret < 0) abort( "ioctl error: (%d) %s\n", (int)errno, strerror(errno) );
131 max_width = size.ws_col;
132 }
133
134 fprintf(out, "Usage:\n %s %s\n", argv[0], usage);
135
136 for(i; opt_count) {
137 printopt(out, width, max_width, options[i].short_name, options[i].long_name, options[i].help);
138 }
139 fprintf(out, " -%c, --%-*s %s\n", 'h', width, "help", "print this help message");
140 exit(out == stdout ? 0 : 1);
141}
142
143bool parse_yesno(const char * arg, bool & value ) {
144 if(strcmp(arg, "yes") == 0) {
145 value = true;
146 return true;
147 }
148
149 if(strcmp(arg, "no") == 0) {
150 value = false;
151 return true;
152 }
153
154 return false;
155}
156
157bool parse_settrue (const char *, bool & value ) {
158 value = true;
159 return true;
160}
161
162bool parse_setfalse(const char *, bool & value ) {
163 value = false;
164 return true;
165}
166
167bool parse(const char * arg, const char * & value ) {
168 value = arg;
169 return true;
170}
171
172bool parse(const char * arg, unsigned & value) {
173 char * end;
174 unsigned long long int r = strtoull(arg, &end, 10);
175 if(*end != '\0') return false;
176 if(r > (unsigned)MAX) return false;
177
178 value = r;
179 return true;
180}
181
182bool parse(const char * arg, unsigned long & value) {
183 char * end;
184 unsigned long long int r = strtoull(arg, &end, 10);
185 if(*end != '\0') return false;
186 if(r > (unsigned long)MAX) return false;
187
188 value = r;
189 return true;
190}
191
192bool parse(const char * arg, unsigned long long & value) {
193 char * end;
194 unsigned long long int r = strtoull(arg, &end, 10);
195 if(*end != '\0') return false;
196 if(r > (unsigned long long)MAX) return false;
197
198 value = r;
199 return true;
200}
201
202bool parse(const char * arg, int & value) {
203 char * end;
204 int r = strtoll(arg, &end, 10);
205 if(*end != '\0') return false;
206
207 value = r;
208 return true;
209}
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