diff options
Diffstat (limited to 'mdoc_strings.c')
-rw-r--r-- | mdoc_strings.c | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/mdoc_strings.c b/mdoc_strings.c new file mode 100644 index 00000000..b6708f85 --- /dev/null +++ b/mdoc_strings.c @@ -0,0 +1,320 @@ +/* $Id: mdoc_strings.c,v 1.1 2009/03/31 13:50:19 kristaps Exp $ */ +/* + * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the + * above copyright notice and this permission notice appear in all + * copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE + * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ +#include <sys/types.h> + +#include <assert.h> +#include <ctype.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +#include "libmdoc.h" + +/* + * Various string-literal operations: converting scalars to and from + * strings, etc. + */ + +struct mdoc_secname { + const char *name; + int flag; +#define MSECNAME_META (1 << 0) +}; + +/* Section names corresponding to mdoc_sec. */ + +static const struct mdoc_secname secnames[] = { + { "PROLOGUE", MSECNAME_META }, + { "BODY", MSECNAME_META }, + { "NAME", 0 }, + { "LIBRARY", 0 }, + { "SYNOPSIS", 0 }, + { "DESCRIPTION", 0 }, + { "IMPLEMENTATION NOTES", 0 }, + { "RETURN VALUES", 0 }, + { "ENVIRONMENT", 0 }, + { "FILES", 0 }, + { "EXAMPLES", 0 }, + { "DIAGNOSTICS", 0 }, + { "COMPATIBILITY", 0 }, + { "ERRORS", 0 }, + { "SEE ALSO", 0 }, + { "STANDARDS", 0 }, + { "HISTORY", 0 }, + { "AUTHORS", 0 }, + { "CAVEATS", 0 }, + { "BUGS", 0 }, + { NULL, 0 } +}; + +#ifdef __linux__ +extern char *strptime(const char *, const char *, struct tm *); +#endif + + +size_t +mdoc_isescape(const char *p) +{ + size_t c; + + if ('\\' != *p++) + return(0); + + switch (*p) { + case ('\\'): + /* FALLTHROUGH */ + case ('\''): + /* FALLTHROUGH */ + case ('`'): + /* FALLTHROUGH */ + case ('q'): + /* FALLTHROUGH */ + case ('-'): + /* FALLTHROUGH */ + case ('%'): + /* FALLTHROUGH */ + case ('0'): + /* FALLTHROUGH */ + case (' '): + /* FALLTHROUGH */ + case ('|'): + /* FALLTHROUGH */ + case ('&'): + /* FALLTHROUGH */ + case ('.'): + /* FALLTHROUGH */ + case (':'): + /* FALLTHROUGH */ + case ('e'): + return(2); + case ('*'): + if (0 == *++p || ! isgraph((u_char)*p)) + return(0); + switch (*p) { + case ('('): + if (0 == *++p || ! isgraph((u_char)*p)) + return(0); + return(4); + case ('['): + for (c = 3, p++; *p && ']' != *p; p++, c++) + if ( ! isgraph((u_char)*p)) + break; + return(*p == ']' ? c : 0); + default: + break; + } + return(3); + case ('('): + if (0 == *++p || ! isgraph((u_char)*p)) + return(0); + if (0 == *++p || ! isgraph((u_char)*p)) + return(0); + return(4); + case ('['): + break; + default: + return(0); + } + + for (c = 3, p++; *p && ']' != *p; p++, c++) + if ( ! isgraph((u_char)*p)) + break; + + return(*p == ']' ? c : 0); +} + + +int +mdoc_iscdelim(char p) +{ + + switch (p) { + case('.'): + /* FALLTHROUGH */ + case(','): + /* FALLTHROUGH */ + case(';'): + /* FALLTHROUGH */ + case(':'): + /* FALLTHROUGH */ + case('?'): + /* FALLTHROUGH */ + case('!'): + /* FALLTHROUGH */ + case('('): + /* FALLTHROUGH */ + case(')'): + /* FALLTHROUGH */ + case('['): + /* FALLTHROUGH */ + case(']'): + /* FALLTHROUGH */ + case('{'): + /* FALLTHROUGH */ + case('}'): + return(1); + default: + break; + } + + return(0); +} + + +int +mdoc_isdelim(const char *p) +{ + + if (0 == *p) + return(0); + if (0 != *(p + 1)) + return(0); + return(mdoc_iscdelim(*p)); +} + + +enum mdoc_sec +mdoc_atosec(const char *p) +{ + const struct mdoc_secname *n; + int i; + + for (i = 0, n = secnames; n->name; n++, i++) + if ( ! (n->flag & MSECNAME_META)) + if (0 == strcmp(p, n->name)) + return((enum mdoc_sec)i); + + return(SEC_CUSTOM); +} + + +time_t +mdoc_atotime(const char *p) +{ + struct tm tm; + char *pp; + + (void)memset(&tm, 0, sizeof(struct tm)); + + if (0 == strcmp(p, "$Mdocdate: March 31 2009 $")) + return(time(NULL)); + if ((pp = strptime(p, "$Mdocdate: March 31 2009 $", &tm)) && 0 == *pp) + return(mktime(&tm)); + /* XXX - this matches "June 1999", which is wrong. */ + if ((pp = strptime(p, "%b %d %Y", &tm)) && 0 == *pp) + return(mktime(&tm)); + if ((pp = strptime(p, "%b %d, %Y", &tm)) && 0 == *pp) + return(mktime(&tm)); + + return(0); +} + + +size_t +mdoc_macro2len(int macro) +{ + + switch (macro) { + case(MDOC_Ad): + return(12); + case(MDOC_Ao): + return(12); + case(MDOC_An): + return(12); + case(MDOC_Aq): + return(12); + case(MDOC_Ar): + return(12); + case(MDOC_Bo): + return(12); + case(MDOC_Bq): + return(12); + case(MDOC_Cd): + return(12); + case(MDOC_Cm): + return(10); + case(MDOC_Do): + return(10); + case(MDOC_Dq): + return(12); + case(MDOC_Dv): + return(12); + case(MDOC_Eo): + return(12); + case(MDOC_Em): + return(10); + case(MDOC_Er): + return(12); + case(MDOC_Ev): + return(15); + case(MDOC_Fa): + return(12); + case(MDOC_Fl): + return(10); + case(MDOC_Fo): + return(16); + case(MDOC_Fn): + return(16); + case(MDOC_Ic): + return(10); + case(MDOC_Li): + return(16); + case(MDOC_Ms): + return(6); + case(MDOC_Nm): + return(10); + case(MDOC_No): + return(12); + case(MDOC_Oo): + return(10); + case(MDOC_Op): + return(14); + case(MDOC_Pa): + return(32); + case(MDOC_Pf): + return(12); + case(MDOC_Po): + return(12); + case(MDOC_Pq): + return(12); + case(MDOC_Ql): + return(16); + case(MDOC_Qo): + return(12); + case(MDOC_So): + return(12); + case(MDOC_Sq): + return(12); + case(MDOC_Sy): + return(6); + case(MDOC_Sx): + return(16); + case(MDOC_Tn): + return(10); + case(MDOC_Va): + return(12); + case(MDOC_Vt): + return(12); + case(MDOC_Xr): + return(10); + default: + break; + }; + return(0); +} |