=================================================================== RCS file: /cvs/mandoc/term.c,v retrieving revision 1.2 retrieving revision 1.76 diff -u -p -r1.2 -r1.76 --- mandoc/term.c 2009/02/20 23:35:36 1.2 +++ mandoc/term.c 2009/06/11 07:26:35 1.76 @@ -1,785 +1,599 @@ -/* $Id: term.c,v 1.2 2009/02/20 23:35:36 kristaps Exp $ */ +/* $Id: term.c,v 1.76 2009/06/11 07:26:35 kristaps Exp $ */ /* - * Copyright (c) 2008 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 copyright notice and this permission notice appear in all - * copies. + * 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. + * 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 -#include -#include #include -#include #include +#include #include -#include -#include -#include "private.h" +#include "term.h" +#include "man.h" +#include "mdoc.h" +extern int man_run(struct termp *, + const struct man *); +extern int mdoc_run(struct termp *, + const struct mdoc *); -enum termesc { - ESC_CLEAR, - ESC_BOLD, - ESC_UNDERLINE -}; +static struct termp *term_alloc(enum termenc); +static void term_free(struct termp *); +static void term_pword(struct termp *, const char *, int); +static void term_pescape(struct termp *, + const char *, int *, int); +static void term_nescape(struct termp *, + const char *, size_t); +static void term_chara(struct termp *, char); +static void term_stringa(struct termp *, + const char *, size_t); +static int term_isopendelim(const char *, int); +static int term_isclosedelim(const char *, int); -struct termp { - size_t maxvisible; - size_t maxcols; - size_t indent; - size_t col; - int flags; -#define TERMP_BOLD (1 << 0) -#define TERMP_UNDERLINE (1 << 1) -#define TERMP_NOSPACE (1 << 2) - char *buf; -}; -struct termact { - int (*pre)(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); - int (*post)(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -}; - -static void termprint_r(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static void termprint_header(struct termp *, - const struct mdoc_meta *); -static void termprint_footer(struct termp *, - const struct mdoc_meta *); - -static void newln(struct termp *); -static void vspace(struct termp *); -static void pword(struct termp *, const char *, size_t); -static void word(struct termp *, const char *); - -static int termp_it_pre(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_ns_pre(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_pp_pre(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_fl_pre(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_op_pre(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_op_post(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_bl_post(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_sh_post(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_sh_pre(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_nd_pre(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_bold_pre(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_under_pre(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_bold_post(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static int termp_under_post(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); - -const struct termact termacts[MDOC_MAX] = { - { NULL, NULL }, /* \" */ - { NULL, NULL }, /* Dd */ - { NULL, NULL }, /* Dt */ - { NULL, NULL }, /* Os */ - { termp_sh_pre, termp_sh_post }, /* Sh */ - { NULL, NULL }, /* Ss */ - { termp_pp_pre, NULL }, /* Pp */ - { NULL, NULL }, /* D1 */ - { NULL, NULL }, /* Dl */ - { NULL, NULL }, /* Bd */ - { NULL, NULL }, /* Ed */ - { NULL, termp_bl_post }, /* Bl */ - { NULL, NULL }, /* El */ - { termp_it_pre, NULL }, /* It */ - { NULL, NULL }, /* Ad */ - { NULL, NULL }, /* An */ - { termp_under_pre, termp_under_post }, /* Ar */ - { NULL, NULL }, /* Cd */ - { NULL, NULL }, /* Cm */ - { NULL, NULL }, /* Dv */ - { NULL, NULL }, /* Er */ - { NULL, NULL }, /* Ev */ - { NULL, NULL }, /* Ex */ - { NULL, NULL }, /* Fa */ - { NULL, NULL }, /* Fd */ - { termp_fl_pre, termp_bold_post }, /* Fl */ - { NULL, NULL }, /* Fn */ - { NULL, NULL }, /* Ft */ - { NULL, NULL }, /* Ic */ - { NULL, NULL }, /* In */ - { NULL, NULL }, /* Li */ - { termp_nd_pre, NULL }, /* Nd */ - { termp_bold_pre, termp_bold_post }, /* Nm */ - { termp_op_pre, termp_op_post }, /* Op */ - { NULL, NULL }, /* Ot */ - { NULL, NULL }, /* Pa */ - { NULL, NULL }, /* Rv */ - { NULL, NULL }, /* St */ - { NULL, NULL }, /* Va */ - { NULL, NULL }, /* Vt */ - { NULL, NULL }, /* Xr */ - { NULL, NULL }, /* %A */ - { NULL, NULL }, /* %B */ - { NULL, NULL }, /* %D */ - { NULL, NULL }, /* %I */ - { NULL, NULL }, /* %J */ - { NULL, NULL }, /* %N */ - { NULL, NULL }, /* %O */ - { NULL, NULL }, /* %P */ - { NULL, NULL }, /* %R */ - { NULL, NULL }, /* %T */ - { NULL, NULL }, /* %V */ - { NULL, NULL }, /* Ac */ - { NULL, NULL }, /* Ao */ - { NULL, NULL }, /* Aq */ - { NULL, NULL }, /* At */ - { NULL, NULL }, /* Bc */ - { NULL, NULL }, /* Bf */ - { NULL, NULL }, /* Bo */ - { NULL, NULL }, /* Bq */ - { NULL, NULL }, /* Bsx */ - { NULL, NULL }, /* Bx */ - { NULL, NULL }, /* Db */ - { NULL, NULL }, /* Dc */ - { NULL, NULL }, /* Do */ - { NULL, NULL }, /* Dq */ - { NULL, NULL }, /* Ec */ - { NULL, NULL }, /* Ef */ - { NULL, NULL }, /* Em */ - { NULL, NULL }, /* Eo */ - { NULL, NULL }, /* Fx */ - { NULL, NULL }, /* Ms */ - { NULL, NULL }, /* No */ - { termp_ns_pre, NULL }, /* Ns */ - { NULL, NULL }, /* Nx */ - { NULL, NULL }, /* Ox */ - { NULL, NULL }, /* Pc */ - { NULL, NULL }, /* Pf */ - { NULL, NULL }, /* Po */ - { NULL, NULL }, /* Pq */ - { NULL, NULL }, /* Qc */ - { NULL, NULL }, /* Ql */ - { NULL, NULL }, /* Qo */ - { NULL, NULL }, /* Qq */ - { NULL, NULL }, /* Re */ - { NULL, NULL }, /* Rs */ - { NULL, NULL }, /* Sc */ - { NULL, NULL }, /* So */ - { NULL, NULL }, /* Sq */ - { NULL, NULL }, /* Sm */ - { NULL, NULL }, /* Sx */ - { NULL, NULL }, /* Sy */ - { NULL, NULL }, /* Tn */ - { NULL, NULL }, /* Ux */ - { NULL, NULL }, /* Xc */ - { NULL, NULL }, /* Xo */ - { NULL, NULL }, /* Fo */ - { NULL, NULL }, /* Fc */ - { NULL, NULL }, /* Oo */ - { NULL, NULL }, /* Oc */ - { NULL, NULL }, /* Bk */ - { NULL, NULL }, /* Ek */ - { NULL, NULL }, /* Bt */ - { NULL, NULL }, /* Hf */ - { NULL, NULL }, /* Fr */ - { NULL, NULL }, /* Ud */ -}; - - -static void -flush(struct termp *p) +void * +ascii_alloc(void) { - size_t i, j, vsz, vis, maxvis; - maxvis = p->maxvisible - (p->indent * 4); - vis = 0; - - for (j = 0; j < (p->indent * 4); j++) - putchar(' '); - - for (i = 0; i < p->col; i++) { - for (j = i, vsz = 0; j < p->col; j++) { - if (isspace(p->buf[j])) - break; - else if (27 == p->buf[j]) { - assert(j + 4 <= p->col); - j += 3; - } else - vsz++; - } - assert(vsz > 0); - - if (vis && vis + vsz >= maxvis) { - putchar('\n'); - for (j = 0; j < (p->indent * 4); j++) - putchar(' '); - vis = 0; - } - - for ( ; i < p->col; i++) { - if (isspace(p->buf[i])) - break; - putchar(p->buf[i]); - } - vis += vsz; - if (i < p->col) { - putchar(' '); - vis++; - } - } - - putchar('\n'); - p->col = 0; + return(term_alloc(TERMENC_ASCII)); } -static void -newln(struct termp *p) +int +terminal_man(void *arg, const struct man *man) { + struct termp *p; - p->flags |= TERMP_NOSPACE; - if (0 == p->col) - return; - flush(p); -} + p = (struct termp *)arg; + if (NULL == p->symtab) + p->symtab = term_ascii2htab(); - -static void -vspace(struct termp *p) -{ - - newln(p); - putchar('\n'); + return(man_run(p, man)); } -static void -chara(struct termp *p, char c) +int +terminal_mdoc(void *arg, const struct mdoc *mdoc) { + struct termp *p; - if (p->col + 1 >= p->maxcols) - errx(1, "line overrun"); + p = (struct termp *)arg; + if (NULL == p->symtab) + p->symtab = term_ascii2htab(); - p->buf[(p->col)++] = c; + return(mdoc_run(p, mdoc)); } -static void -escape(struct termp *p, enum termesc esc) +void +terminal_free(void *arg) { - if (p->col + 4 >= p->maxcols) - errx(1, "line overrun"); - - p->buf[(p->col)++] = 27; - p->buf[(p->col)++] = '['; - switch (esc) { - case (ESC_CLEAR): - p->buf[(p->col)++] = '0'; - break; - case (ESC_BOLD): - p->buf[(p->col)++] = '1'; - break; - case (ESC_UNDERLINE): - p->buf[(p->col)++] = '4'; - break; - default: - abort(); - /* NOTREACHED */ - } - p->buf[(p->col)++] = 'm'; + term_free((struct termp *)arg); } static void -pword(struct termp *p, const char *word, size_t len) +term_free(struct termp *p) { - size_t i; - assert(len > 0); + if (p->buf) + free(p->buf); + if (TERMENC_ASCII == p->enc && p->symtab) + term_asciifree(p->symtab); - if ( ! (p->flags & TERMP_NOSPACE)) - chara(p, ' '); - - p->flags &= ~TERMP_NOSPACE; - - if (p->flags & TERMP_BOLD) - escape(p, ESC_BOLD); - if (p->flags & TERMP_UNDERLINE) - escape(p, ESC_UNDERLINE); - - for (i = 0; i < len; i++) - chara(p, word[i]); - - if (p->flags & TERMP_BOLD || - p->flags & TERMP_UNDERLINE) - escape(p, ESC_CLEAR); + free(p); } -static void -word(struct termp *p, const char *word) +static struct termp * +term_alloc(enum termenc enc) { - size_t i, j, len; + struct termp *p; - /* TODO: delimiters? */ - - len = strlen(word); - assert(len > 0); - - for (j = i = 0; i < len; i++) { - if ( ! isspace(word[i])) { - j++; - continue; - } - if (0 == j) - continue; - assert(i >= j); - pword(p, &word[i - j], j); - j = 0; - } - if (j > 0) { - assert(i >= j); - pword(p, &word[i - j], j); - } + if (NULL == (p = malloc(sizeof(struct termp)))) + err(1, "malloc"); + bzero(p, sizeof(struct termp)); + p->maxrmargin = 80; + p->enc = enc; + return(p); } static int -termp_it_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) +term_isclosedelim(const char *p, int len) { - switch (node->type) { - case (MDOC_HEAD): - /* TODO: only print one, if compat. */ - vspace(p); - break; + if (1 != len) + return(0); + + switch (*p) { + case('.'): + /* FALLTHROUGH */ + case(','): + /* FALLTHROUGH */ + case(';'): + /* FALLTHROUGH */ + case(':'): + /* FALLTHROUGH */ + case('?'): + /* FALLTHROUGH */ + case('!'): + /* FALLTHROUGH */ + case(')'): + /* FALLTHROUGH */ + case(']'): + /* FALLTHROUGH */ + case('}'): + return(1); default: break; } - return(1); + + return(0); } static int -termp_bold_post(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) +term_isopendelim(const char *p, int len) { - p->flags &= ~TERMP_BOLD; - return(1); -} + if (1 != len) + return(0); + switch (*p) { + case('('): + /* FALLTHROUGH */ + case('['): + /* FALLTHROUGH */ + case('{'): + return(1); + default: + break; + } -static int -termp_under_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ - - p->flags |= TERMP_UNDERLINE; - return(1); + return(0); } -static int -termp_bold_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) +/* + * Flush a line of text. A "line" is loosely defined as being something + * that should be followed by a newline, regardless of whether it's + * broken apart by newlines getting there. A line can also be a + * fragment of a columnar list. + * + * Specifically, a line is whatever's in p->buf of length p->col, which + * is zeroed after this function returns. + * + * The variables TERMP_NOLPAD, TERMP_LITERAL and TERMP_NOBREAK are of + * critical importance here. Their behaviour follows: + * + * - TERMP_NOLPAD: when beginning to write the line, don't left-pad the + * offset value. This is useful when doing columnar lists where the + * prior column has right-padded. + * + * - TERMP_NOBREAK: this is the most important and is used when making + * columns. In short: don't print a newline and instead pad to the + * right margin. Used in conjunction with TERMP_NOLPAD. + * + * - TERMP_NONOBREAK: don't newline when TERMP_NOBREAK is specified. + * + * In-line line breaking: + * + * If TERMP_NOBREAK is specified and the line overruns the right + * margin, it will break and pad-right to the right margin after + * writing. If maxrmargin is violated, it will break and continue + * writing from the right-margin, which will lead to the above + * scenario upon exit. + * + * Otherwise, the line will break at the right margin. Extremely long + * lines will cause the system to emit a warning (TODO: hyphenate, if + * possible). + */ +void +term_flushln(struct termp *p) { + int i, j; + size_t vsz, vis, maxvis, mmax, bp; - p->flags |= TERMP_BOLD; - return(1); -} + /* + * First, establish the maximum columns of "visible" content. + * This is usually the difference between the right-margin and + * an indentation, but can be, for tagged lists or columns, a + * small set of values. + */ + assert(p->offset < p->rmargin); + maxvis = p->rmargin - p->offset; + mmax = p->maxrmargin - p->offset; + bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; + vis = 0; -static int -termp_ns_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ + /* + * If in the standard case (left-justified), then begin with our + * indentation, otherwise (columns, etc.) just start spitting + * out text. + */ - p->flags |= TERMP_NOSPACE; - return(1); -} + if ( ! (p->flags & TERMP_NOLPAD)) + /* LINTED */ + for (j = 0; j < (int)p->offset; j++) + putchar(' '); + for (i = 0; i < (int)p->col; i++) { + /* + * Count up visible word characters. Control sequences + * (starting with the CSI) aren't counted. A space + * generates a non-printing word, which is valid (the + * space is printed according to regular spacing rules). + */ -static int -termp_pp_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ + /* LINTED */ + for (j = i, vsz = 0; j < (int)p->col; j++) { + if (' ' == p->buf[j]) + break; + else if (8 == p->buf[j]) + j += 1; + else + vsz++; + } - vspace(p); - return(1); -} + /* + * Do line-breaking. If we're greater than our + * break-point and already in-line, break to the next + * line and start writing. If we're at the line start, + * then write out the word (TODO: hyphenate) and break + * in a subsequent loop invocation. + */ + if ( ! (TERMP_NOBREAK & p->flags)) { + if (vis && vis + vsz > bp) { + putchar('\n'); + for (j = 0; j < (int)p->offset; j++) + putchar(' '); + vis = 0; + } + } else if (vis && vis + vsz > bp) { + putchar('\n'); + for (j = 0; j < (int)p->rmargin; j++) + putchar(' '); + vis = p->rmargin - p->offset; + } -static int -termp_under_post(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ + /* + * Write out the word and a trailing space. Omit the + * space if we're the last word in the line or beyond + * our breakpoint. + */ - p->flags &= ~TERMP_UNDERLINE; - return(1); -} + for ( ; i < (int)p->col; i++) { + if (' ' == p->buf[i]) + break; + putchar(p->buf[i]); + } + vis += vsz; + if (i < (int)p->col && vis <= bp) { + putchar(' '); + vis++; + } + } + /* + * If we've overstepped our maximum visible no-break space, then + * cause a newline and offset at the right margin. + */ -static int -termp_nd_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ + if ((TERMP_NOBREAK & p->flags) && vis >= maxvis) { + if ( ! (TERMP_NONOBREAK & p->flags)) { + putchar('\n'); + for (i = 0; i < (int)p->rmargin; i++) + putchar(' '); + } + p->col = 0; + return; + } - word(p, "-"); - return(1); -} + /* + * If we're not to right-marginalise it (newline), then instead + * pad to the right margin and stay off. + */ + if (p->flags & TERMP_NOBREAK) { + if ( ! (TERMP_NONOBREAK & p->flags)) + for ( ; vis < maxvis; vis++) + putchar(' '); + } else + putchar('\n'); -static int -termp_bl_post(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ - - switch (node->type) { - case (MDOC_BLOCK): - newln(p); - break; - default: - break; - } - return(1); + p->col = 0; } -static int -termp_op_post(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) +/* + * A newline only breaks an existing line; it won't assert vertical + * space. All data in the output buffer is flushed prior to the newline + * assertion. + */ +void +term_newln(struct termp *p) { - switch (node->type) { - case (MDOC_BODY): - p->flags |= TERMP_NOSPACE; - word(p, "\\(rB"); - break; - default: - break; + p->flags |= TERMP_NOSPACE; + if (0 == p->col) { + p->flags &= ~TERMP_NOLPAD; + return; } - return(1); + term_flushln(p); + p->flags &= ~TERMP_NOLPAD; } -static int -termp_sh_post(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) +/* + * Asserts a vertical space (a full, empty line-break between lines). + * Note that if used twice, this will cause two blank spaces and so on. + * All data in the output buffer is flushed prior to the newline + * assertion. + */ +void +term_vspace(struct termp *p) { - switch (node->type) { - case (MDOC_HEAD): - p->flags &= ~TERMP_BOLD; - newln(p); - break; - case (MDOC_BODY): - newln(p); - (p->indent)--; - break; - default: - break; - } - return(1); + term_newln(p); + putchar('\n'); } -static int -termp_sh_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) +/* + * Break apart a word into "pwords" (partial-words, usually from + * breaking up a phrase into individual words) and, eventually, put them + * into the output buffer. If we're a literal word, then don't break up + * the word and put it verbatim into the output buffer. + */ +void +term_word(struct termp *p, const char *word) { + int i, j, len; - switch (node->type) { - case (MDOC_HEAD): - vspace(p); - p->flags |= TERMP_BOLD; - break; - case (MDOC_BODY): - (p->indent)++; - break; - default: - break; + len = (int)strlen(word); + + if (p->flags & TERMP_LITERAL) { + term_pword(p, word, len); + return; } - return(1); -} + /* LINTED */ + for (j = i = 0; i < len; i++) { + if (' ' != word[i]) { + j++; + continue; + } + + /* Escaped spaces don't delimit... */ + if (i && ' ' == word[i] && '\\' == word[i - 1]) { + j++; + continue; + } -static int -termp_op_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ - - switch (node->type) { - case (MDOC_BODY): - word(p, "\\(lB"); - p->flags |= TERMP_NOSPACE; - break; - default: - break; + if (0 == j) + continue; + assert(i >= j); + term_pword(p, &word[i - j], j); + j = 0; } - return(1); + if (j > 0) { + assert(i >= j); + term_pword(p, &word[i - j], j); + } } -static int -termp_fl_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) +/* + * Determine the symbol indicated by an escape sequences, that is, one + * starting with a backslash. Once done, we pass this value into the + * output buffer by way of the symbol table. + */ +static void +term_nescape(struct termp *p, const char *word, size_t len) { + const char *rhs; + size_t sz; - p->flags |= TERMP_BOLD; - word(p, "-"); - p->flags |= TERMP_NOSPACE; - return(1); + if (NULL == (rhs = term_a2ascii(p->symtab, word, len, &sz))) + return; + term_stringa(p, rhs, sz); } +/* + * Handle an escape sequence: determine its length and pass it to the + * escape-symbol look table. Note that we assume mdoc(3) has validated + * the escape sequence (we assert upon badly-formed escape sequences). + */ static void -termprint_r(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) +term_pescape(struct termp *p, const char *word, int *i, int len) { + int j; - /* Pre-processing ----------------- */ + if (++(*i) >= len) + return; - if (MDOC_TEXT != node->type) { - if (termacts[node->tok].pre) - if ( ! (*termacts[node->tok].pre)(p, meta, node)) - return; - } else /* MDOC_TEXT == node->type */ - word(p, node->data.text.string); + if ('(' == word[*i]) { + (*i)++; + if (*i + 1 >= len) + return; - /* Children ---------------------- */ + term_nescape(p, &word[*i], 2); + (*i)++; + return; - if (NULL == node->child) { - /* No-child processing. */ - switch (node->type) { - case (MDOC_ELEM): - switch (node->tok) { - case (MDOC_Nm): - word(p, "progname"); /* TODO */ - break; - case (MDOC_Ar): - word(p, "..."); - break; - default: - break; - } + } else if ('*' == word[*i]) { + (*i)++; + if (*i >= len) + return; + + switch (word[*i]) { + case ('('): + (*i)++; + if (*i + 1 >= len) + return; + + term_nescape(p, &word[*i], 2); + (*i)++; + return; + case ('['): break; default: + term_nescape(p, &word[*i], 1); + return; + } + + } else if ('f' == word[*i]) { + (*i)++; + if (*i >= len) + return; + switch (word[*i]) { + case ('B'): + p->flags |= TERMP_BOLD; break; + case ('I'): + p->flags |= TERMP_UNDER; + break; + case ('P'): + /* FALLTHROUGH */ + case ('R'): + p->flags &= ~TERMP_STYLE; + break; + default: + break; } - } else - termprint_r(p, meta, node->child); + return; - /* Post-processing --------------- */ + } else if ('[' != word[*i]) { + term_nescape(p, &word[*i], 1); + return; + } - if (MDOC_TEXT != node->type) { - if (termacts[node->tok].post) - if ( ! (*termacts[node->tok].post)(p, meta, node)) - return; - } + (*i)++; + for (j = 0; word[*i] && ']' != word[*i]; (*i)++, j++) + /* Loop... */ ; - /* Siblings ---------------------- */ + if (0 == word[*i]) + return; - if (node->next) - termprint_r(p, meta, node->next); + term_nescape(p, &word[*i - j], (size_t)j); } +/* + * Handle pwords, partial words, which may be either a single word or a + * phrase that cannot be broken down (such as a literal string). This + * handles word styling. + */ static void -termprint_footer(struct termp *p, const struct mdoc_meta *meta) +term_pword(struct termp *p, const char *word, int len) { - struct tm *tm; - char *buf, *os; - size_t sz, osz, ssz, i; + int i; - if (NULL == (buf = malloc(p->maxvisible))) - err(1, "malloc"); - if (NULL == (os = malloc(p->maxvisible))) - err(1, "malloc"); + if (term_isclosedelim(word, len)) + if ( ! (TERMP_IGNDELIM & p->flags)) + p->flags |= TERMP_NOSPACE; - tm = localtime(&meta->date); - if (NULL == strftime(buf, p->maxvisible, "%B %d, %Y", tm)) - err(1, "strftime"); + if ( ! (TERMP_NOSPACE & p->flags)) + term_chara(p, ' '); - osz = strlcpy(os, meta->os, p->maxvisible); + if ( ! (p->flags & TERMP_NONOSPACE)) + p->flags &= ~TERMP_NOSPACE; - sz = strlen(buf); - ssz = sz + osz + 1; + /* + * If ANSI (word-length styling), then apply our style now, + * before the word. + */ - if (ssz > p->maxvisible) { - ssz -= p->maxvisible; - assert(ssz <= osz); - os[osz - ssz] = 0; - ssz = 1; - } else - ssz = p->maxvisible - ssz + 1; + for (i = 0; i < len; i++) { + if ('\\' == word[i]) { + term_pescape(p, word, &i, len); + continue; + } - printf("\n"); - printf("%s", os); - for (i = 0; i < ssz; i++) - printf(" "); + if (TERMP_STYLE & p->flags) { + if (TERMP_BOLD & p->flags) { + term_chara(p, word[i]); + term_chara(p, 8); + } + if (TERMP_UNDER & p->flags) { + term_chara(p, '_'); + term_chara(p, 8); + } + } - printf("%s\n", buf); - fflush(stdout); + term_chara(p, word[i]); + } - free(buf); - free(os); + if (term_isopendelim(word, len)) + p->flags |= TERMP_NOSPACE; } +/* + * Like term_chara() but for arbitrary-length buffers. Resize the + * buffer by a factor of two (if the buffer is less than that) or the + * buffer's size. + */ static void -termprint_header(struct termp *p, const struct mdoc_meta *meta) +term_stringa(struct termp *p, const char *c, size_t sz) { - char *msec, *buf, *title, *pp; - size_t ssz, tsz, ttsz, i;; + size_t s; - if (NULL == (buf = malloc(p->maxvisible))) - err(1, "malloc"); - if (NULL == (title = malloc(p->maxvisible))) - err(1, "malloc"); + if (0 == sz) + return; - if (NULL == (pp = mdoc_vol2a(meta->vol))) - switch (meta->msec) { - case (MSEC_1): - /* FALLTHROUGH */ - case (MSEC_6): - /* FALLTHROUGH */ - case (MSEC_7): - pp = mdoc_vol2a(VOL_URM); - break; - case (MSEC_8): - pp = mdoc_vol2a(VOL_SMM); - break; - case (MSEC_2): - /* FALLTHROUGH */ - case (MSEC_3): - /* FALLTHROUGH */ - case (MSEC_4): - /* FALLTHROUGH */ - case (MSEC_5): - pp = mdoc_vol2a(VOL_PRM); - break; - case (MSEC_9): - pp = mdoc_vol2a(VOL_KM); - break; - default: - /* FIXME: capitalise. */ - if (NULL == (pp = mdoc_msec2a(meta->msec))) - pp = mdoc_msec2a(MSEC_local); - break; - } - assert(pp); - - tsz = strlcpy(buf, pp, p->maxvisible); - assert(tsz < p->maxvisible); - - if ((pp = mdoc_arch2a(meta->arch))) { - tsz = strlcat(buf, " (", p->maxvisible); - assert(tsz < p->maxvisible); - tsz = strlcat(buf, pp, p->maxvisible); - assert(tsz < p->maxvisible); - tsz = strlcat(buf, ")", p->maxvisible); - assert(tsz < p->maxvisible); + assert(c); + if (p->col + sz >= p->maxcols) { + if (0 == p->maxcols) + p->maxcols = 256; + s = sz > p->maxcols * 2 ? sz : p->maxcols * 2; + p->buf = realloc(p->buf, s); + if (NULL == p->buf) + err(1, "realloc"); + p->maxcols = s; } - ttsz = strlcpy(title, meta->title, p->maxvisible); - - if (NULL == (msec = mdoc_msec2a(meta->msec))) - msec = ""; - - ssz = (2 * (ttsz + 2 + strlen(msec))) + tsz + 2; - - if (ssz > p->maxvisible) { - if ((ssz -= p->maxvisible) % 2) - ssz++; - ssz /= 2; - - assert(ssz <= ttsz); - title[ttsz - ssz] = 0; - ssz = 1; - } else - ssz = ((p->maxvisible - ssz) / 2) + 1; - - printf("%s(%s)", title, msec); - - for (i = 0; i < ssz; i++) - printf(" "); - - printf("%s", buf); - - for (i = 0; i < ssz; i++) - printf(" "); - - printf("%s(%s)\n", title, msec); - fflush(stdout); - - free(title); - free(buf); + (void)memcpy(&p->buf[(int)p->col], c, sz); + p->col += sz; } -int -termprint(const struct mdoc_node *node, - const struct mdoc_meta *meta) +/* + * Insert a single character into the line-buffer. If the buffer's + * space is exceeded, then allocate more space by doubling the buffer + * size. + */ +static void +term_chara(struct termp *p, char c) { - struct termp p; + size_t s; - if (ERR == setupterm(NULL, STDOUT_FILENO, NULL)) - return(0); - - p.maxvisible = columns < 60 ? 60 : (size_t)columns; - p.maxcols = 1024; - p.indent = p.col = 0; - p.flags = TERMP_NOSPACE; - - if (NULL == (p.buf = malloc(p.maxcols))) - err(1, "malloc"); - - termprint_header(&p, meta); - termprint_r(&p, meta, node); - termprint_footer(&p, meta); - - free(p.buf); - - return(1); + if (p->col + 1 >= p->maxcols) { + if (0 == p->maxcols) + p->maxcols = 256; + s = p->maxcols * 2; + p->buf = realloc(p->buf, s); + if (NULL == p->buf) + err(1, "realloc"); + p->maxcols = s; + } + p->buf[(int)(p->col)++] = c; } -