=================================================================== RCS file: /cvs/mandoc/mandoc.c,v retrieving revision 1.87 retrieving revision 1.100 diff -u -p -r1.87 -r1.100 --- mandoc/mandoc.c 2014/10/13 17:17:45 1.87 +++ mandoc/mandoc.c 2017/06/02 19:21:23 1.100 @@ -1,7 +1,7 @@ -/* $Id: mandoc.c,v 1.87 2014/10/13 17:17:45 schwarze Exp $ */ +/* $Id: mandoc.c,v 1.100 2017/06/02 19:21:23 schwarze Exp $ */ /* - * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons - * Copyright (c) 2011, 2012, 2013, 2014 Ingo Schwarze + * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons + * Copyright (c) 2011-2015, 2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -32,8 +32,6 @@ #include "mandoc_aux.h" #include "libmandoc.h" -#define DATESIZE 32 - static int a2time(time_t *, const char *, const char *); static char *time2a(time_t); @@ -83,7 +81,7 @@ mandoc_escape(const char **end, const char **start, in break; case 'C': if ('\'' != **start) - return(ESCAPE_ERROR); + return ESCAPE_ERROR; *start = ++*end; gly = ESCAPE_SPECIAL; term = '\''; @@ -93,9 +91,10 @@ mandoc_escape(const char **end, const char **start, in * Escapes taking no arguments at all. */ case 'd': - /* FALLTHROUGH */ case 'u': - return(ESCAPE_IGNORE); + case ',': + case '/': + return ESCAPE_IGNORE; /* * The \z escape is supposed to output the following @@ -104,26 +103,19 @@ mandoc_escape(const char **end, const char **start, in * let us just skip the next character. */ case 'z': - return(ESCAPE_SKIPCHAR); + return ESCAPE_SKIPCHAR; /* * Handle all triggers matching \X(xy, \Xx, and \X[xxxx], where * 'X' is the trigger. These have opaque sub-strings. */ case 'F': - /* FALLTHROUGH */ case 'g': - /* FALLTHROUGH */ case 'k': - /* FALLTHROUGH */ case 'M': - /* FALLTHROUGH */ case 'm': - /* FALLTHROUGH */ case 'n': - /* FALLTHROUGH */ case 'V': - /* FALLTHROUGH */ case 'Y': gly = ESCAPE_IGNORE; /* FALLTHROUGH */ @@ -151,21 +143,18 @@ mandoc_escape(const char **end, const char **start, in * The \B and \w escapes are handled in roff.c, roff_res(). */ case 'A': - /* FALLTHROUGH */ case 'b': - /* FALLTHROUGH */ case 'D': - /* FALLTHROUGH */ - case 'o': - /* FALLTHROUGH */ case 'R': - /* FALLTHROUGH */ case 'X': - /* FALLTHROUGH */ case 'Z': - if ('\0' == **start) - return(ESCAPE_ERROR); gly = ESCAPE_IGNORE; + /* FALLTHROUGH */ + case 'o': + if (**start == '\0') + return ESCAPE_ERROR; + if (gly == ESCAPE_ERROR) + gly = ESCAPE_OVERSTRIKE; term = **start; *start = ++*end; break; @@ -175,24 +164,28 @@ mandoc_escape(const char **end, const char **start, in * and 'N' resolves to a numerical expression. */ case 'h': - /* FALLTHROUGH */ case 'H': - /* FALLTHROUGH */ case 'L': - /* FALLTHROUGH */ case 'l': - /* FALLTHROUGH */ case 'S': - /* FALLTHROUGH */ case 'v': - /* FALLTHROUGH */ case 'x': if (strchr(" %&()*+-./0123456789:<=>", **start)) { if ('\0' != **start) ++*end; - return(ESCAPE_ERROR); + return ESCAPE_ERROR; } - gly = ESCAPE_IGNORE; + switch ((*start)[-1]) { + case 'h': + gly = ESCAPE_HORIZ; + break; + case 'l': + gly = ESCAPE_HLINE; + break; + default: + gly = ESCAPE_IGNORE; + break; + } term = **start; *start = ++*end; break; @@ -203,11 +196,11 @@ mandoc_escape(const char **end, const char **start, in */ case 'N': if ('\0' == **start) - return(ESCAPE_ERROR); + return ESCAPE_ERROR; (*end)++; if (isdigit((unsigned char)**start)) { *sz = 1; - return(ESCAPE_IGNORE); + return ESCAPE_IGNORE; } (*start)++; while (isdigit((unsigned char)**end)) @@ -215,7 +208,7 @@ mandoc_escape(const char **end, const char **start, in *sz = *end - *start; if ('\0' != **end) (*end)++; - return(ESCAPE_NUMBERED); + return ESCAPE_NUMBERED; /* * Sizes get a special category of their own. @@ -225,7 +218,7 @@ mandoc_escape(const char **end, const char **start, in /* See +/- counts as a sign. */ if ('+' == **end || '-' == **end || ASCII_HYPH == **end) - (*end)++; + *start = ++*end; switch (**end) { case '(': @@ -240,6 +233,12 @@ mandoc_escape(const char **end, const char **start, in *start = ++*end; term = '\''; break; + case '3': + case '2': + case '1': + *sz = (*end)[-1] == 's' && + isdigit((unsigned char)(*end)[1]) ? 2 : 1; + break; default: *sz = 1; break; @@ -269,12 +268,12 @@ mandoc_escape(const char **end, const char **start, in while (**end != term) { switch (**end) { case '\0': - return(ESCAPE_ERROR); + return ESCAPE_ERROR; case '\\': (*end)++; if (ESCAPE_ERROR == mandoc_escape(end, NULL, NULL)) - return(ESCAPE_ERROR); + return ESCAPE_ERROR; break; default: (*end)++; @@ -285,7 +284,7 @@ mandoc_escape(const char **end, const char **start, in } else { assert(*sz > 0); if ((size_t)*sz > strlen(*start)) - return(ESCAPE_ERROR); + return ESCAPE_ERROR; *end += *sz; } @@ -311,12 +310,10 @@ mandoc_escape(const char **end, const char **start, in switch (**start) { case '3': - /* FALLTHROUGH */ case 'B': gly = ESCAPE_FONTBOLD; break; case '2': - /* FALLTHROUGH */ case 'I': gly = ESCAPE_FONTITALIC; break; @@ -324,7 +321,6 @@ mandoc_escape(const char **end, const char **start, in gly = ESCAPE_FONTPREV; break; case '1': - /* FALLTHROUGH */ case 'R': gly = ESCAPE_FONTROMAN; break; @@ -334,13 +330,21 @@ mandoc_escape(const char **end, const char **start, in if (1 == *sz && 'c' == **start) gly = ESCAPE_NOSPACE; /* - * Unicode escapes are defined in groff as \[uXXXX] + * Unicode escapes are defined in groff as \[u0000] * to \[u10FFFF], where the contained value must be * a valid Unicode codepoint. Here, however, only - * check the length and the validity of all digits. + * check the length and range. */ - else if (*sz > 4 && *sz < 8 && **start == 'u' && - (int)strspn(*start + 1, "0123456789ABCDEFabcdef") + if (**start != 'u' || *sz < 5 || *sz > 7) + break; + if (*sz == 7 && ((*start)[1] != '1' || (*start)[2] != '0')) + break; + if (*sz == 6 && (*start)[1] == '0') + break; + if (*sz == 5 && (*start)[1] == 'D' && + strchr("89ABCDEF", (*start)[2]) != NULL) + break; + if ((int)strspn(*start + 1, "0123456789ABCDEFabcdef") + 1 == *sz) gly = ESCAPE_UNICODE; break; @@ -348,7 +352,7 @@ mandoc_escape(const char **end, const char **start, in break; } - return(gly); + return gly; } /* @@ -443,7 +447,7 @@ mandoc_getarg(struct mparse *parse, char **cpp, int ln if ('\0' == *cp && (white || ' ' == cp[-1])) mandoc_msg(MANDOCERR_SPACE_EOL, parse, ln, *pos, NULL); - return(start); + return start; } static int @@ -460,10 +464,10 @@ a2time(time_t *t, const char *fmt, const char *p) #endif if (NULL != pp && '\0' == *pp) { *t = mktime(&tm); - return(1); + return 1; } - return(0); + return 0; } static char * @@ -475,6 +479,8 @@ time2a(time_t t) int isz; tm = localtime(&t); + if (tm == NULL) + return NULL; /* * Reserve space: @@ -482,45 +488,61 @@ time2a(time_t t) * up to 2 characters for the day + comma + blank * 4 characters for the year and a terminating '\0' */ + p = buf = mandoc_malloc(10 + 4 + 4 + 1); - if (0 == (ssz = strftime(p, 10 + 1, "%B ", tm))) + if ((ssz = strftime(p, 10 + 1, "%B ", tm)) == 0) goto fail; p += (int)ssz; - if (-1 == (isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday))) + /* + * The output format is just "%d" here, not "%2d" or "%02d". + * That's also the reason why we can't just format the + * date as a whole with "%B %e, %Y" or "%B %d, %Y". + * Besides, the present approach is less prone to buffer + * overflows, in case anybody should ever introduce the bug + * of looking at LC_TIME. + */ + + if ((isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)) == -1) goto fail; p += isz; - if (0 == strftime(p, 4 + 1, "%Y", tm)) + if (strftime(p, 4 + 1, "%Y", tm) == 0) goto fail; - return(buf); + return buf; fail: free(buf); - return(NULL); + return NULL; } char * mandoc_normdate(struct mparse *parse, char *in, int ln, int pos) { - char *out; time_t t; - if (NULL == in || '\0' == *in || - 0 == strcmp(in, "$" "Mdocdate$")) { + /* No date specified: use today's date. */ + + if (in == NULL || *in == '\0' || strcmp(in, "$" "Mdocdate$") == 0) { mandoc_msg(MANDOCERR_DATE_MISSING, parse, ln, pos, NULL); - time(&t); + return time2a(time(NULL)); } - else if (a2time(&t, "%Y-%m-%d", in)) - t = 0; - else if (!a2time(&t, "$" "Mdocdate: %b %d %Y $", in) && - !a2time(&t, "%b %d, %Y", in)) { + + /* Valid mdoc(7) date format. */ + + if (a2time(&t, "$" "Mdocdate: %b %d %Y $", in) || + a2time(&t, "%b %d, %Y", in)) + return time2a(t); + + /* Do not warn about the legacy man(7) format. */ + + if ( ! a2time(&t, "%Y-%m-%d", in)) mandoc_msg(MANDOCERR_DATE_BAD, parse, ln, pos, in); - t = 0; - } - out = t ? time2a(t) : NULL; - return(out ? out : mandoc_strdup(in)); + + /* Use any non-mdoc(7) date verbatim. */ + + return mandoc_strdup(in); } int @@ -530,7 +552,7 @@ mandoc_eos(const char *p, size_t sz) int enclosed, found; if (0 == sz) - return(0); + return 0; /* * End-of-sentence recognition must include situations where @@ -542,28 +564,24 @@ mandoc_eos(const char *p, size_t sz) for (q = p + (int)sz - 1; q >= p; q--) { switch (*q) { case '\"': - /* FALLTHROUGH */ case '\'': - /* FALLTHROUGH */ case ']': - /* FALLTHROUGH */ case ')': if (0 == found) enclosed = 1; break; case '.': - /* FALLTHROUGH */ case '!': - /* FALLTHROUGH */ case '?': found = 1; break; default: - return(found && (!enclosed || isalnum((unsigned char)*q))); + return found && + (!enclosed || isalnum((unsigned char)*q)); } } - return(found && !enclosed); + return found && !enclosed; } /* @@ -578,7 +596,7 @@ mandoc_strntoi(const char *p, size_t sz, int base) long v; if (sz > 31) - return(-1); + return -1; memcpy(buf, p, sz); buf[(int)sz] = '\0'; @@ -587,12 +605,12 @@ mandoc_strntoi(const char *p, size_t sz, int base) v = strtol(buf, &ep, base); if (buf[0] == '\0' || *ep != '\0') - return(-1); + return -1; if (v > INT_MAX) v = INT_MAX; if (v < INT_MIN) v = INT_MIN; - return((int)v); + return (int)v; }