=================================================================== RCS file: /cvs/mandoc/mandoc.c,v retrieving revision 1.4 retrieving revision 1.21 diff -u -p -r1.4 -r1.21 --- mandoc/mandoc.c 2009/10/28 19:21:59 1.4 +++ mandoc/mandoc.c 2010/07/06 22:04:31 1.21 @@ -1,6 +1,6 @@ -/* $Id: mandoc.c,v 1.4 2009/10/28 19:21:59 kristaps Exp $ */ +/* $Id: mandoc.c,v 1.21 2010/07/06 22:04:31 kristaps Exp $ */ /* - * Copyright (c) 2008, 2009 Kristaps Dzonsons + * Copyright (c) 2008, 2009 Kristaps Dzonsons * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -14,6 +14,10 @@ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + #include #include @@ -21,26 +25,54 @@ #include #include #include +#include +#include "mandoc.h" #include "libmandoc.h" +static int a2time(time_t *, const char *, const char *); +static int spec_norm(char *, int); + + +/* + * "Normalise" a special string by converting its ASCII_HYPH entries + * into actual hyphens. + */ +static int +spec_norm(char *p, int sz) +{ + int i; + + for (i = 0; i < sz; i++) + if (ASCII_HYPH == p[i]) + p[i] = '-'; + + return(sz); +} + + int -mandoc_special(const char *p) +mandoc_special(char *p) { - int c; + int terminator; /* Terminator for \s. */ + int lim; /* Limit for N in \s. */ + int c, i; + char *sv; + sv = p; + if ('\\' != *p++) - return(0); + return(spec_norm(sv, 0)); switch (*p) { - case ('\\'): - /* FALLTHROUGH */ case ('\''): /* FALLTHROUGH */ case ('`'): /* FALLTHROUGH */ case ('q'): /* FALLTHROUGH */ + case (ASCII_HYPH): + /* FALLTHROUGH */ case ('-'): /* FALLTHROUGH */ case ('~'): @@ -53,6 +85,8 @@ mandoc_special(const char *p) /* FALLTHROUGH */ case (' '): /* FALLTHROUGH */ + case ('}'): + /* FALLTHROUGH */ case ('|'): /* FALLTHROUGH */ case ('&'): @@ -62,47 +96,122 @@ mandoc_special(const char *p) case (':'): /* FALLTHROUGH */ case ('c'): - return(2); + /* FALLTHROUGH */ case ('e'): - return(2); + return(spec_norm(sv, 2)); + case ('s'): + if ('\0' == *++p) + return(spec_norm(sv, 2)); + + c = 2; + terminator = 0; + lim = 1; + + if (*p == '\'') { + lim = 0; + terminator = 1; + ++p; + ++c; + } else if (*p == '[') { + lim = 0; + terminator = 2; + ++p; + ++c; + } else if (*p == '(') { + lim = 2; + terminator = 3; + ++p; + ++c; + } + + if (*p == '+' || *p == '-') { + ++p; + ++c; + } + + if (*p == '\'') { + if (terminator) + return(spec_norm(sv, 0)); + lim = 0; + terminator = 1; + ++p; + ++c; + } else if (*p == '[') { + if (terminator) + return(spec_norm(sv, 0)); + lim = 0; + terminator = 2; + ++p; + ++c; + } else if (*p == '(') { + if (terminator) + return(spec_norm(sv, 0)); + lim = 2; + terminator = 3; + ++p; + ++c; + } + + /* TODO: needs to handle floating point. */ + + if ( ! isdigit((u_char)*p)) + return(spec_norm(sv, 0)); + + for (i = 0; isdigit((u_char)*p); i++) { + if (lim && i >= lim) + break; + ++p; + ++c; + } + + if (terminator && terminator < 3) { + if (1 == terminator && *p != '\'') + return(spec_norm(sv, 0)); + if (2 == terminator && *p != ']') + return(spec_norm(sv, 0)); + ++p; + ++c; + } + + return(spec_norm(sv, c)); case ('f'): - if (0 == *++p || ! isgraph((u_char)*p)) - return(0); - return(3); + /* FALLTHROUGH */ + case ('F'): + /* FALLTHROUGH */ case ('*'): - if (0 == *++p || ! isgraph((u_char)*p)) - return(0); + if ('\0' == *++p || isspace((u_char)*p)) + return(spec_norm(sv, 0)); switch (*p) { case ('('): - if (0 == *++p || ! isgraph((u_char)*p)) - return(0); - return(4); + if ('\0' == *++p || isspace((u_char)*p)) + return(spec_norm(sv, 0)); + return(spec_norm(sv, 4)); case ('['): for (c = 3, p++; *p && ']' != *p; p++, c++) - if ( ! isgraph((u_char)*p)) + if (isspace((u_char)*p)) break; - return(*p == ']' ? c : 0); + return(spec_norm(sv, *p == ']' ? c : 0)); default: break; } - return(3); + return(spec_norm(sv, 3)); case ('('): - if (0 == *++p || ! isgraph((u_char)*p)) - return(0); - if (0 == *++p || ! isgraph((u_char)*p)) - return(0); - return(4); + if ('\0' == *++p || isspace((u_char)*p)) + return(spec_norm(sv, 0)); + if ('\0' == *++p || isspace((u_char)*p)) + return(spec_norm(sv, 0)); + return(spec_norm(sv, 4)); case ('['): break; default: - return(0); + return(spec_norm(sv, 0)); } for (c = 3, p++; *p && ']' != *p; p++, c++) - if ( ! isgraph((u_char)*p)) + if (isspace((u_char)*p)) break; - return(*p == ']' ? c : 0); + return(spec_norm(sv, *p == ']' ? c : 0)); } @@ -113,7 +222,7 @@ mandoc_calloc(size_t num, size_t size) ptr = calloc(num, size); if (NULL == ptr) { - fprintf(stderr, "memory exhausted\n"); + perror(NULL); exit(EXIT_FAILURE); } @@ -128,7 +237,7 @@ mandoc_malloc(size_t size) ptr = malloc(size); if (NULL == ptr) { - fprintf(stderr, "memory exhausted\n"); + perror(NULL); exit(EXIT_FAILURE); } @@ -142,7 +251,7 @@ mandoc_realloc(void *ptr, size_t size) ptr = realloc(ptr, size); if (NULL == ptr) { - fprintf(stderr, "memory exhausted\n"); + perror(NULL); exit(EXIT_FAILURE); } @@ -150,19 +259,6 @@ mandoc_realloc(void *ptr, size_t size) } -void * -mandoc_reallocf(void *old_ptr, size_t size) /* FIXME: remove (not used) */ -{ - void *ptr; - - ptr = realloc(old_ptr, size); - if (NULL == ptr) - free(old_ptr); - - return(ptr); -} - - char * mandoc_strdup(const char *ptr) { @@ -170,9 +266,131 @@ mandoc_strdup(const char *ptr) p = strdup(ptr); if (NULL == p) { - fprintf(stderr, "memory exhausted\n"); + perror(NULL); exit(EXIT_FAILURE); } return(p); +} + + +static int +a2time(time_t *t, const char *fmt, const char *p) +{ + struct tm tm; + char *pp; + + memset(&tm, 0, sizeof(struct tm)); + + pp = strptime(p, fmt, &tm); + if (NULL != pp && '\0' == *pp) { + *t = mktime(&tm); + return(1); + } + + return(0); +} + + +/* + * Convert from a manual date string (see mdoc(7) and man(7)) into a + * date according to the stipulated date type. + */ +time_t +mandoc_a2time(int flags, const char *p) +{ + time_t t; + + if (MTIME_MDOCDATE & flags) { + if (0 == strcmp(p, "$" "Mdocdate$")) + return(time(NULL)); + if (a2time(&t, "$" "Mdocdate: %b %d %Y $", p)) + return(t); + } + + if (MTIME_CANONICAL & flags || MTIME_REDUCED & flags) + if (a2time(&t, "%b %d, %Y", p)) + return(t); + + if (MTIME_ISO_8601 & flags) + if (a2time(&t, "%Y-%m-%d", p)) + return(t); + + if (MTIME_REDUCED & flags) { + if (a2time(&t, "%d, %Y", p)) + return(t); + if (a2time(&t, "%Y", p)) + return(t); + } + + return(0); +} + + +int +mandoc_eos(const char *p, size_t sz) +{ + + if (0 == sz) + return(0); + + /* + * End-of-sentence recognition must include situations where + * some symbols, such as `)', allow prior EOS punctuation to + * propogate outward. + */ + + for ( ; sz; sz--) { + switch (p[(int)sz - 1]) { + case ('\"'): + /* FALLTHROUGH */ + case ('\''): + /* FALLTHROUGH */ + case (']'): + /* FALLTHROUGH */ + case (')'): + break; + case ('.'): + /* Escaped periods. */ + if (sz > 1 && '\\' == p[(int)sz - 2]) + return(0); + /* FALLTHROUGH */ + case ('!'): + /* FALLTHROUGH */ + case ('?'): + return(1); + default: + return(0); + } + } + + return(0); +} + + +int +mandoc_hyph(const char *start, const char *c) +{ + + /* + * Choose whether to break at a hyphenated character. We only + * do this if it's free-standing within a word. + */ + + /* Skip first/last character of buffer. */ + if (c == start || '\0' == *(c + 1)) + return(0); + /* Skip first/last character of word. */ + if ('\t' == *(c + 1) || '\t' == *(c - 1)) + return(0); + if (' ' == *(c + 1) || ' ' == *(c - 1)) + return(0); + /* Skip double invocations. */ + if ('-' == *(c + 1) || '-' == *(c - 1)) + return(0); + /* Skip escapes. */ + if ('\\' == *(c - 1)) + return(0); + + return(1); }