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c30ca4f4 | 1 | /* |
e99c8356 | 2 | * Copyright (c) 1987 Regents of the University of California. |
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3 | * All rights reserved. The Berkeley software License Agreement |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
7 | #ifndef lint | |
8 | char copyright[] = | |
e99c8356 | 9 | "@(#) Copyright (c) 1987 Regents of the University of California.\n\ |
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10 | All rights reserved.\n"; |
11 | #endif not lint | |
12 | ||
13 | #ifndef lint | |
e99c8356 | 14 | static char sccsid[] = "@(#)ctags.c 5.3 (Berkeley) %G%"; |
c30ca4f4 | 15 | #endif not lint |
2e314d68 | 16 | |
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17 | #include <ctags.h> |
18 | #include <strings.h> | |
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19 | |
20 | /* | |
9927b527 | 21 | * ctags: create a tags file |
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22 | */ |
23 | ||
e99c8356 | 24 | NODE *head; /* head of the sorted binary tree */ |
16bc359f | 25 | |
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26 | /* boolean "func" (see init()) */ |
27 | bool _wht[0177],_etk[0177],_itk[0177],_btk[0177],_gd[0177]; | |
16bc359f | 28 | |
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29 | FILE *inf, /* ioptr for current input file */ |
30 | *outf; /* ioptr for tags file */ | |
16bc359f | 31 | |
e99c8356 | 32 | long lineftell; /* ftell after getc( inf ) == '\n' */ |
16bc359f | 33 | |
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34 | int lineno, /* line number of current line */ |
35 | dflag, /* -d: non-macro defines */ | |
36 | tflag, /* -t: create tags for typedefs */ | |
37 | wflag, /* -w: suppress warnings */ | |
38 | vflag, /* -v: vgrind style index output */ | |
39 | xflag; /* -x: cxref style output */ | |
16bc359f | 40 | |
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41 | char *curfile, /* current input file name */ |
42 | searchar = '/', /* use /.../ searches by default */ | |
43 | lbuf[BUFSIZ]; | |
16bc359f | 44 | |
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45 | main(argc,argv) |
46 | int argc; | |
47 | char **argv; | |
16bc359f | 48 | { |
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49 | extern char *optarg; /* getopt arguments */ |
50 | extern int optind; | |
51 | static char *outfile = "tags"; /* output file */ | |
52 | int aflag, /* -a: append to tags */ | |
53 | uflag, /* -u: update tags */ | |
54 | exit_val, /* exit value */ | |
55 | step, /* step through args */ | |
56 | ch; /* getopts char */ | |
57 | char cmd[100]; /* too ugly to explain */ | |
16bc359f | 58 | |
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59 | aflag = uflag = NO; |
60 | while ((ch = getopt(argc,argv,"BFadf:tuwvx")) != EOF) | |
61 | switch((char)ch) { | |
62 | case 'B': | |
63 | searchar = '?'; | |
c30ca4f4 | 64 | break; |
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65 | case 'F': |
66 | searchar = '/'; | |
c30ca4f4 | 67 | break; |
e99c8356 | 68 | case 'a': |
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69 | aflag++; |
70 | break; | |
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71 | case 'd': |
72 | dflag++; | |
73 | break; | |
74 | case 'f': | |
75 | outfile = optarg; | |
76 | break; | |
77 | case 't': | |
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78 | tflag++; |
79 | break; | |
e99c8356 | 80 | case 'u': |
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81 | uflag++; |
82 | break; | |
e99c8356 | 83 | case 'w': |
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84 | wflag++; |
85 | break; | |
e99c8356 | 86 | case 'v': |
c30ca4f4 | 87 | vflag++; |
e99c8356 | 88 | case 'x': |
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89 | xflag++; |
90 | break; | |
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91 | case '?': |
92 | default: | |
c30ca4f4 | 93 | goto usage; |
16bc359f | 94 | } |
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95 | argv += optind; |
96 | argc -= optind; | |
97 | if (!argc) { | |
98 | usage: puts("Usage: ctags [-BFadtuwvx] [-f tagsfile] file ..."); | |
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99 | exit(1); |
100 | } | |
101 | ||
e99c8356 | 102 | init(); |
16bc359f | 103 | |
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104 | for (exit_val = step = 0;step < argc;++step) |
105 | if (!(inf = fopen(argv[step],"r"))) { | |
106 | perror(argv[step]); | |
107 | exit_val = 1; | |
16bc359f | 108 | } |
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109 | else { |
110 | curfile = argv[step]; | |
111 | find_entries(argv[step]); | |
112 | (void)fclose(inf); | |
c30ca4f4 | 113 | } |
16bc359f | 114 | |
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115 | if (head) |
116 | if (xflag) | |
117 | put_entries(head); | |
118 | else { | |
119 | if (uflag) { | |
120 | for (step = 0;step < argc;step++) { | |
121 | (void)sprintf(cmd,"mv %s OTAGS;fgrep -v '\t%s\t' OTAGS >%s;rm OTAGS",outfile,argv[step],outfile); | |
122 | system(cmd); | |
c30ca4f4 | 123 | } |
e99c8356 | 124 | ++aflag; |
c30ca4f4 | 125 | } |
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126 | if (!(outf = fopen(outfile, aflag ? "a" : "w"))) { |
127 | perror(outfile); | |
128 | exit(exit_val); | |
129 | } | |
130 | put_entries(head); | |
131 | (void)fclose(outf); | |
132 | if (uflag) { | |
133 | (void)sprintf(cmd,"sort %s -o %s",outfile,outfile); | |
134 | system(cmd); | |
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135 | } |
136 | } | |
e99c8356 | 137 | exit(exit_val); |
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138 | } |
139 | ||
140 | /* | |
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141 | * init -- |
142 | * this routine sets up the boolean psuedo-functions which work by | |
143 | * setting boolean flags dependent upon the corresponding character. | |
144 | * Every char which is NOT in that string is false with respect to | |
145 | * the pseudo-function. Therefore, all of the array "_wht" is NO | |
146 | * by default and then the elements subscripted by the chars in | |
147 | * CWHITE are set to YES. Thus, "_wht" of a char is YES if it is in | |
148 | * the string CWHITE, else NO. | |
16bc359f | 149 | */ |
e99c8356 | 150 | init() |
16bc359f | 151 | { |
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152 | register int i; |
153 | register char *sp; | |
16bc359f | 154 | |
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155 | for (i = 0; i < 0177; i++) { |
156 | _wht[i] = _etk[i] = _itk[i] = _btk[i] = NO; | |
157 | _gd[i] = YES; | |
158 | } | |
159 | #define CWHITE " \f\t\n" | |
160 | for (sp = CWHITE; *sp; sp++) /* white space chars */ | |
161 | _wht[*sp] = YES; | |
162 | #define CTOKEN " \t\n\"'#()[]{}=-+%*/&|^~!<>;,.:?" | |
163 | for (sp = CTOKEN; *sp; sp++) /* token ending chars */ | |
164 | _etk[*sp] = YES; | |
165 | #define CINTOK "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz0123456789" | |
166 | for (sp = CINTOK; *sp; sp++) /* valid in-token chars */ | |
167 | _itk[*sp] = YES; | |
168 | #define CBEGIN "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz" | |
169 | for (sp = CBEGIN; *sp; sp++) /* token starting chars */ | |
170 | _btk[*sp] = YES; | |
171 | #define CNOTGD ",;" | |
172 | for (sp = CNOTGD; *sp; sp++) /* invalid after-function chars */ | |
173 | _gd[*sp] = NO; | |
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174 | } |
175 | ||
c30ca4f4 | 176 | /* |
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177 | * find_entries -- |
178 | * this routine opens the specified file and calls the function | |
179 | * which searches the file. | |
c30ca4f4 | 180 | */ |
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181 | find_entries(file) |
182 | char *file; | |
c30ca4f4 | 183 | { |
e99c8356 | 184 | register char *cp; |
c30ca4f4 | 185 | |
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186 | lineno = 0; /* should be 1 ?? KB */ |
187 | if (cp = rindex(file, '.')) { | |
188 | if (cp[1] == 'l' && !cp[2]) { | |
189 | register int c; | |
190 | ||
191 | for (;;) { | |
192 | if (GETC(==,EOF)) | |
c30ca4f4 | 193 | return; |
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194 | if (!iswhite(c)) { |
195 | rewind(inf); | |
196 | break; | |
c30ca4f4 | 197 | } |
c30ca4f4 | 198 | } |
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199 | #define LISPCHR ";([" |
200 | /* lisp */ if (index(LISPCHR,(char)c)) { | |
201 | l_entries(); | |
202 | return; | |
16bc359f | 203 | } |
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204 | /* lex */ else { |
205 | /* | |
206 | * we search all 3 parts of a lex file | |
207 | * for C references. This may be wrong. | |
208 | */ | |
209 | (void)strcpy(lbuf,"%%$"); | |
210 | pfnote("yylex",0); | |
f5c61c07 | 211 | } |
f5c61c07 | 212 | } |
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213 | /* yacc */ else if (cp[1] == 'y' && !cp[2]) { |
214 | /* | |
215 | * we search only the 3rd part of a yacc file | |
216 | * for C references. This may be wrong. | |
217 | */ | |
218 | toss_yysec(); | |
219 | y_entries(); | |
c30ca4f4 | 220 | } |
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221 | /* fortran */ else if ((cp[1] != 'c' && cp[1] != 'h') && !cp[2]) { |
222 | if (PF_funcs()) | |
223 | return; | |
224 | rewind(inf); | |
c30ca4f4 | 225 | } |
c30ca4f4 | 226 | } |
e99c8356 | 227 | /* C */ c_entries(); |
c30ca4f4 | 228 | } |