diff options
author | fanf <fanf@FreeBSD.org> | 2002-05-23 16:50:41 +0000 |
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committer | fanf <fanf@FreeBSD.org> | 2002-05-23 16:50:41 +0000 |
commit | 977ef0bf3c79b9aa821051474e106726c59d17e2 (patch) | |
tree | 8aba7f911fb6d6e00ed419cc417b7b72f5279f09 /usr.bin | |
parent | a58ed5586066d85d4dd1a3db9682400515e5e524 (diff) | |
download | FreeBSD-src-977ef0bf3c79b9aa821051474e106726c59d17e2.zip FreeBSD-src-977ef0bf3c79b9aa821051474e106726c59d17e2.tar.gz |
Sync with upstream version:
* Ensure we work within the array bounds when parsing command-line options;
* Replace h0h0getopt with getopt(3);
* Use consistent whitespace style in the function declarations.
Revieweded by: dwmalone (mentor)
Diffstat (limited to 'usr.bin')
-rw-r--r-- | usr.bin/unifdef/unifdef.c | 155 |
1 files changed, 88 insertions, 67 deletions
diff --git a/usr.bin/unifdef/unifdef.c b/usr.bin/unifdef/unifdef.c index 0f7b064..3541952 100644 --- a/usr.bin/unifdef/unifdef.c +++ b/usr.bin/unifdef/unifdef.c @@ -44,7 +44,7 @@ static const char copyright[] = #ifdef __IDSTRING __IDSTRING(Berkeley, "@(#)unifdef.c 8.1 (Berkeley) 6/6/93"); __IDSTRING(NetBSD, "$NetBSD: unifdef.c,v 1.8 2000/07/03 02:51:36 matt Exp $"); -__IDSTRING(dotat, "$dotat: things/unifdef.c,v 1.68 2002/05/15 15:43:14 fanf Exp $"); +__IDSTRING(dotat, "$dotat: things/unifdef.c,v 1.73 2002/05/21 17:33:41 fanf Exp $"); #endif #ifdef __FBSDID __FBSDID("$FreeBSD$"); @@ -72,6 +72,7 @@ __FBSDID("$FreeBSD$"); #include <stdio.h> #include <stdlib.h> #include <string.h> +#include <unistd.h> /* types of input lines: */ typedef enum { @@ -210,101 +211,88 @@ Comment_state incomment; /* inside C comment */ Quote_state inquote; /* inside single or double quotes */ Linetype checkline(int *); -void debug(const char *, ...); +void debug(const char *, ...); Linetype process(int); void doif(int, Linetype, bool); void elif2if(void); void elif2endif(void); -void error(int, int); -int findsym(const char *); -void flushline(bool); -int getline(char *, int, FILE *, bool); +void error(int, int); +void addsym(bool, bool, char *); +int findsym(const char *); +void flushline(bool); +int getline(char *, int, FILE *, bool); Linetype ifeval(const char **); -int main(int, char **); +int main(int, char **); const char *skipcomment(const char *); const char *skipquote(const char *, Quote_state); const char *skipsym(const char *); -void usage(void); +void usage(void); #define endsym(c) (!isalpha((unsigned char)c) && !isdigit((unsigned char)c) && c != '_') int main(int argc, char *argv[]) { - char **curarg; - char *cp; - char *cp1; - bool ignorethis; - - for (curarg = &argv[1]; --argc > 0; curarg++) { - if (*(cp1 = cp = *curarg) != '-') + int opt; + + while ((opt = getopt(argc, argv, "i:D:U:I:cdlst")) != -1) + switch (opt) { + case 'i': /* treat stuff controlled by these symbols as text */ + /* + * For strict backwards-compatibility the U or D + * should be immediately after the -i but it doesn't + * matter much if we relax that requirement. + */ + opt = *optarg++; + if (opt == 'D') + addsym(true, true, optarg); + else if (opt == 'U') + addsym(true, false, optarg); + else + usage(); break; - if (*++cp1 == 'i') { - ignorethis = true; - cp1++; - } else - ignorethis = false; - if ((*cp1 == 'D' || *cp1 == 'U') && cp1[1] != '\0') { - int symind; - - if ((symind = findsym(&cp1[1])) == 0) { - if (nsyms >= MAXSYMS) - errx(2, "too many symbols"); - symind = nsyms++; - symname[symind] = &cp1[1]; - } - ignore[symind] = ignorethis; - if (*cp1 == 'D') { - char *val; - - val = strchr(cp1, '='); - if (val == NULL) - value[symind] = ""; - else { - value[symind] = val+1; - *val = '\0'; - } - } else - value[symind] = NULL; - } else if (ignorethis) { - goto unrec; - } else if (cp[1] == 'I') { - if (cp[2] == '\0') { - curarg++; - argc--; - } - continue; - } else if (strcmp(&cp[1], "") == 0) + case 'D': /* define a symbol */ + addsym(false, true, optarg); break; - else if (strcmp(&cp[1], "-debug") == 0) - debugging = true; - else if (strcmp(&cp[1], "c") == 0) + case 'U': /* undef a symbol */ + addsym(false, false, optarg); + break; + case 'I': + /* ignore for compatibility with cpp */ + break; + case 'c': /* treat -D as -U and vice versa */ complement = true; - else if (strcmp(&cp[1], "l") == 0) + break; + case 'd': + debugging = true; + break; + case 'l': /* blank deleted lines instead of omitting them */ lnblank = true; - else if (strcmp(&cp[1], "s") == 0) + break; + case 's': /* only output list of symbols that control #ifs */ symlist = true; - else if (strcmp(&cp[1], "t") == 0) + break; + case 't': /* don't parse C comments or strings */ text = true; - else { - unrec: - warnx("unrecognized option: %s", cp); + break; + default: usage(); } - } + argc -= optind; + argv += optind; if (nsyms == 1 && !symlist) { warnx("must -D or -U at least one symbol"); usage(); } if (argc > 1) { errx(2, "can only do one file"); - } else if (argc == 1 && strcmp(*curarg, "-") != 0) { - filename = *curarg; + } else if (argc == 1 && strcmp(*argv, "-") != 0) { + filename = *argv; if ((input = fopen(filename, "r")) != NULL) { (void) process(0); (void) fclose(input); } else - err(2, "can't open %s", *curarg); + err(2, "can't open %s", *argv); } else { filename = "[stdin]"; input = stdin; @@ -520,7 +508,7 @@ checkline(int *cursym) goto eol; cp = skipcomment(++cp); - keyword = tline + (cp - tline); + keyword = (char *)cp; symp = kw; while (!endsym(*cp)) { *symp = *cp++; @@ -836,8 +824,8 @@ findsym(const char *str) printf("%.*s\n", cp-str, str); } for (symind = 1; symind < nsyms; ++symind) { - for (symp = symname[symind], cp = str - ; *symp && *cp == *symp + for (cp = str, symp = symname[symind] + ; *cp && *symp && *cp == *symp ; cp++, symp++ ) continue; @@ -851,6 +839,39 @@ findsym(const char *str) } /* + * Add a symbol to the symbol table. + */ +void +addsym(bool ignorethis, bool definethis, char *sym) +{ + int symind; + char *val; + + symind = findsym(sym); + if (symind == 0) { + if (nsyms >= MAXSYMS) + errx(2, "too many symbols"); + symind = nsyms++; + } + symname[symind] = sym; + ignore[symind] = ignorethis; + val = (char *)skipsym(sym); + if (definethis) { + if (*val == '=') { + value[symind] = val+1; + *val = '\0'; + } else if (*val == '\0') + value[symind] = ""; + else + usage(); + } else { + if (*val != '\0') + usage(); + value[symind] = NULL; + } +} + +/* * Read a line from the input and expand tabs if requested and (if * compiled in) treats form-feed as an end-of-line. */ |