=================================================================== RCS file: /cvs/mandoc/term.c,v retrieving revision 1.2 retrieving revision 1.116 diff -u -p -r1.2 -r1.116 --- mandoc/term.c 2009/02/20 23:35:36 1.2 +++ mandoc/term.c 2009/10/28 06:54:12 1.116 @@ -1,785 +1,643 @@ -/* $Id: term.c,v 1.2 2009/02/20 23:35:36 kristaps Exp $ */ +/* $Id: term.c,v 1.116 2009/10/28 06:54:12 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 -#include "private.h" +#include "chars.h" +#include "out.h" +#include "term.h" +#include "man.h" +#include "mdoc.h" +#include "main.h" +/* FIXME: accomodate non-breaking, non-collapsing white-space. */ +/* FIXME: accomodate non-breaking, collapsing white-space. */ -enum termesc { - ESC_CLEAR, - ESC_BOLD, - ESC_UNDERLINE -}; +static struct termp *term_alloc(enum termenc); +static void term_free(struct termp *); -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; -}; +static void do_escaped(struct termp *, const char **); +static void do_special(struct termp *, + const char *, size_t); +static void do_reserved(struct termp *, + const char *, size_t); +static void buffer(struct termp *, char); +static void encode(struct termp *, char); -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) +void +terminal_free(void *arg) { - p->flags |= TERMP_NOSPACE; - if (0 == p->col) - return; - flush(p); + term_free((struct termp *)arg); } static void -vspace(struct termp *p) +term_free(struct termp *p) { - newln(p); - putchar('\n'); + if (p->buf) + free(p->buf); + if (p->symtab) + chars_free(p->symtab); + + free(p); } -static void -chara(struct termp *p, char c) +static struct termp * +term_alloc(enum termenc enc) { + struct termp *p; - if (p->col + 1 >= p->maxcols) - errx(1, "line overrun"); - - p->buf[(p->col)++] = c; + if (NULL == (p = calloc(1, sizeof(struct termp)))) + return(NULL); + p->maxrmargin = 78; + p->enc = enc; + return(p); } -static void -escape(struct termp *p, enum termesc esc) +/* + * 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 usage of termp:flags is as 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_TWOSPACE: when padding, make sure there are at least two + * space characters of padding. Otherwise, rather break the line. + * + * - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and + * the line is overrun, and don't pad-right if it's underrun. + * + * - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when + * overruning, instead save the position and continue at that point + * when the next invocation. + * + * 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. + */ +void +term_flushln(struct termp *p) { + int i; /* current input position in p->buf */ + size_t vis; /* current visual position on output */ + size_t vbl; /* number of blanks to prepend to output */ + size_t vsz; /* visual characters to write to output */ + size_t bp; /* visual right border position */ + int j; /* temporary loop index */ + size_t maxvis, mmax; + static int overstep = 0; - if (p->col + 4 >= p->maxcols) - errx(1, "line overrun"); + /* + * 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. + */ - 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'; -} + assert(p->offset < p->rmargin); + maxvis = (int)(p->rmargin - p->offset) - overstep < 0 ? + 0 : p->rmargin - p->offset - overstep; + mmax = (int)(p->maxrmargin - p->offset) - overstep < 0 ? + 0 : p->maxrmargin - p->offset - overstep; -static void -pword(struct termp *p, const char *word, size_t len) -{ - size_t i; + bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; - assert(len > 0); + /* + * FIXME: if bp is zero, we still output the first word before + * breaking the line. + */ - if ( ! (p->flags & TERMP_NOSPACE)) - chara(p, ' '); + vis = 0; - p->flags &= ~TERMP_NOSPACE; + /* + * If in the standard case (left-justified), then begin with our + * indentation, otherwise (columns, etc.) just start spitting + * out text. + */ - if (p->flags & TERMP_BOLD) - escape(p, ESC_BOLD); - if (p->flags & TERMP_UNDERLINE) - escape(p, ESC_UNDERLINE); + if ( ! (p->flags & TERMP_NOLPAD)) + /* LINTED */ + for (j = 0; j < (int)p->offset; j++) + putchar(' '); - for (i = 0; i < len; i++) - chara(p, word[i]); + 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). + */ - if (p->flags & TERMP_BOLD || - p->flags & TERMP_UNDERLINE) - escape(p, ESC_CLEAR); -} + /* LINTED */ + for (j = i, vsz = 0; j < (int)p->col; j++) { + if (j && ' ' == p->buf[j]) + break; + else if (8 == p->buf[j]) + vsz--; + else + vsz++; + } + /* + * Choose the number of blanks to prepend: no blank at the + * beginning of a line, one between words -- but do not + * actually write them yet. + */ + vbl = (size_t)(0 == vis ? 0 : 1); -static void -word(struct termp *p, const char *word) -{ - size_t i, j, len; + /* + * Find out whether we would exceed the right margin. + * If so, break to the next line. (TODO: hyphenate) + * Otherwise, write the chosen number of blanks now. + */ + if (vis && vis + vbl + vsz > bp) { + putchar('\n'); + if (TERMP_NOBREAK & p->flags) { + for (j = 0; j < (int)p->rmargin; j++) + putchar(' '); + vis = p->rmargin - p->offset; + } else { + for (j = 0; j < (int)p->offset; j++) + putchar(' '); + vis = 0; + } + /* Remove the overstep width. */ + bp += (int)/* LINTED */ + overstep; + overstep = 0; + } else { + for (j = 0; j < (int)vbl; j++) + putchar(' '); + vis += vbl; + } - /* TODO: delimiters? */ - - len = strlen(word); - assert(len > 0); - - for (j = i = 0; i < len; i++) { - if ( ! isspace(word[i])) { - j++; - continue; + /* + * Finally, write out the word. + */ + for ( ; i < (int)p->col; i++) { + if (' ' == p->buf[i]) + break; + putchar(p->buf[i]); } - if (0 == j) - continue; - assert(i >= j); - pword(p, &word[i - j], j); - j = 0; + vis += vsz; } - if (j > 0) { - assert(i >= j); - pword(p, &word[i - j], j); - } -} + p->col = 0; + overstep = 0; -static int -termp_it_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ - - switch (node->type) { - case (MDOC_HEAD): - /* TODO: only print one, if compat. */ - vspace(p); - break; - default: - break; + if ( ! (TERMP_NOBREAK & p->flags)) { + putchar('\n'); + return; } - return(1); -} + if (TERMP_HANG & p->flags) { + /* We need one blank after the tag. */ + overstep = /* LINTED */ + vis - maxvis + 1; -static int -termp_bold_post(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ + /* + * Behave exactly the same way as groff: + * If we have overstepped the margin, temporarily move + * it to the right and flag the rest of the line to be + * shorter. + * If we landed right at the margin, be happy. + * If we are one step before the margin, temporarily + * move it one step LEFT and flag the rest of the line + * to be longer. + */ + if (overstep >= -1) { + assert((int)maxvis + overstep >= 0); + /* LINTED */ + maxvis += overstep; + } else + overstep = 0; - p->flags &= ~TERMP_BOLD; - return(1); -} + } else if (TERMP_DANGLE & p->flags) + return; - -static int -termp_under_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ - - p->flags |= TERMP_UNDERLINE; - return(1); + /* Right-pad. */ + if (maxvis > vis + /* LINTED */ + ((TERMP_TWOSPACE & p->flags) ? 1 : 0)) + for ( ; vis < maxvis; vis++) + putchar(' '); + else { /* ...or newline break. */ + putchar('\n'); + for (i = 0; i < (int)p->rmargin; i++) + putchar(' '); + } } -static int -termp_bold_pre(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) { - p->flags |= TERMP_BOLD; - return(1); -} - - -static int -termp_ns_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ - p->flags |= TERMP_NOSPACE; - return(1); + if (0 == p->col) { + p->flags &= ~TERMP_NOLPAD; + return; + } + term_flushln(p); + p->flags &= ~TERMP_NOLPAD; } -static int -termp_pp_pre(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) { - vspace(p); - return(1); + term_newln(p); + putchar('\n'); } -static int -termp_under_post(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) +static void +do_special(struct termp *p, const char *word, size_t len) { + const char *rhs; + size_t sz; + int i; - p->flags &= ~TERMP_UNDERLINE; - return(1); -} + rhs = chars_a2ascii(p->symtab, word, len, &sz); - -static int -termp_nd_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ - - word(p, "-"); - return(1); -} - - -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; + if (NULL == rhs) { +#if 0 + fputs("Unknown special character: ", stderr); + for (i = 0; i < (int)len; i++) + fputc(word[i], stderr); + fputc('\n', stderr); +#endif + return; } - return(1); + for (i = 0; i < (int)sz; i++) + encode(p, rhs[i]); } -static int -termp_op_post(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) +static void +do_reserved(struct termp *p, const char *word, size_t len) { + const char *rhs; + size_t sz; + int i; - switch (node->type) { - case (MDOC_BODY): - p->flags |= TERMP_NOSPACE; - word(p, "\\(rB"); - break; - default: - break; - } - return(1); -} + rhs = chars_a2res(p->symtab, word, len, &sz); - -static int -termp_sh_post(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ - - switch (node->type) { - case (MDOC_HEAD): - p->flags &= ~TERMP_BOLD; - newln(p); - break; - case (MDOC_BODY): - newln(p); - (p->indent)--; - break; - default: - break; + if (NULL == rhs) { +#if 0 + fputs("Unknown reserved word: ", stderr); + for (i = 0; i < (int)len; i++) + fputc(word[i], stderr); + fputc('\n', stderr); +#endif + return; } - return(1); + for (i = 0; i < (int)sz; i++) + encode(p, rhs[i]); } -static int -termp_sh_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) +/* + * 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 +do_escaped(struct termp *p, const char **word) { + int j, type; + const char *wp; - switch (node->type) { - case (MDOC_HEAD): - vspace(p); - p->flags |= TERMP_BOLD; - break; - case (MDOC_BODY): - (p->indent)++; - break; - default: - break; - } - return(1); -} + wp = *word; + type = 1; - -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 == *(++wp)) { + *word = wp; + return; } - return(1); -} + if ('(' == *wp) { + wp++; + if (0 == *wp || 0 == *(wp + 1)) { + *word = 0 == *wp ? wp : wp + 1; + return; + } -static int -termp_fl_pre(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ + do_special(p, wp, 2); + *word = ++wp; + return; - p->flags |= TERMP_BOLD; - word(p, "-"); - p->flags |= TERMP_NOSPACE; - return(1); -} + } else if ('*' == *wp) { + if (0 == *(++wp)) { + *word = wp; + return; + } - -static void -termprint_r(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) -{ - - /* Pre-processing ----------------- */ - - if (MDOC_TEXT != node->type) { - if (termacts[node->tok].pre) - if ( ! (*termacts[node->tok].pre)(p, meta, node)) + switch (*wp) { + case ('('): + wp++; + if (0 == *wp || 0 == *(wp + 1)) { + *word = 0 == *wp ? wp : wp + 1; return; - } else /* MDOC_TEXT == node->type */ - word(p, node->data.text.string); + } - /* Children ---------------------- */ + do_reserved(p, wp, 2); + *word = ++wp; + return; + case ('['): + type = 0; + break; + default: + do_reserved(p, wp, 1); + *word = wp; + return; + } + + } else if ('f' == *wp) { + if (0 == *(++wp)) { + *word = wp; + 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; - } + switch (*wp) { + case ('B'): + p->bold++; break; + case ('I'): + p->under++; + break; + case ('P'): + /* FALLTHROUGH */ + case ('R'): + p->bold = p->under = 0; + break; default: break; } - } else - termprint_r(p, meta, node->child); - /* Post-processing --------------- */ + *word = wp; + return; - if (MDOC_TEXT != node->type) { - if (termacts[node->tok].post) - if ( ! (*termacts[node->tok].post)(p, meta, node)) - return; - } + } else if ('[' != *wp) { + do_special(p, wp, 1); + *word = wp; + return; + } - /* Siblings ---------------------- */ + wp++; + for (j = 0; *wp && ']' != *wp; wp++, j++) + /* Loop... */ ; - if (node->next) - termprint_r(p, meta, node->next); -} + if (0 == *wp) { + *word = wp; + return; + } - -static void -termprint_footer(struct termp *p, const struct mdoc_meta *meta) -{ - struct tm *tm; - char *buf, *os; - size_t sz, osz, ssz, i; - - if (NULL == (buf = malloc(p->maxvisible))) - err(1, "malloc"); - if (NULL == (os = malloc(p->maxvisible))) - err(1, "malloc"); - - tm = localtime(&meta->date); - if (NULL == strftime(buf, p->maxvisible, "%B %d, %Y", tm)) - err(1, "strftime"); - - osz = strlcpy(os, meta->os, p->maxvisible); - - sz = strlen(buf); - ssz = sz + osz + 1; - - if (ssz > p->maxvisible) { - ssz -= p->maxvisible; - assert(ssz <= osz); - os[osz - ssz] = 0; - ssz = 1; - } else - ssz = p->maxvisible - ssz + 1; - - printf("\n"); - printf("%s", os); - for (i = 0; i < ssz; i++) - printf(" "); - - printf("%s\n", buf); - fflush(stdout); - - free(buf); - free(os); + if (type) + do_special(p, wp - j, (size_t)j); + else + do_reserved(p, wp - j, (size_t)j); + *word = wp; } -static void -termprint_header(struct termp *p, const struct mdoc_meta *meta) +/* + * 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. + */ +void +term_word(struct termp *p, const char *word) { - char *msec, *buf, *title, *pp; - size_t ssz, tsz, ttsz, i;; + const char *sv; - if (NULL == (buf = malloc(p->maxvisible))) - err(1, "malloc"); - if (NULL == (title = malloc(p->maxvisible))) - err(1, "malloc"); + sv = word; - if (NULL == (pp = mdoc_vol2a(meta->vol))) - switch (meta->msec) { - case (MSEC_1): + if (word[0] && 0 == word[1]) + switch (word[0]) { + case('.'): /* FALLTHROUGH */ - case (MSEC_6): + case(','): /* FALLTHROUGH */ - case (MSEC_7): - pp = mdoc_vol2a(VOL_URM); - break; - case (MSEC_8): - pp = mdoc_vol2a(VOL_SMM); - break; - case (MSEC_2): + case(';'): /* FALLTHROUGH */ - case (MSEC_3): + case(':'): /* FALLTHROUGH */ - case (MSEC_4): + case('?'): /* FALLTHROUGH */ - case (MSEC_5): - pp = mdoc_vol2a(VOL_PRM); + case('!'): + /* FALLTHROUGH */ + case(')'): + /* FALLTHROUGH */ + case(']'): + /* FALLTHROUGH */ + case('}'): + if ( ! (TERMP_IGNDELIM & p->flags)) + p->flags |= TERMP_NOSPACE; 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 ( ! (TERMP_NOSPACE & p->flags)) + buffer(p, ' '); - 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); - } + if ( ! (p->flags & TERMP_NONOSPACE)) + p->flags &= ~TERMP_NOSPACE; - ttsz = strlcpy(title, meta->title, p->maxvisible); + for ( ; *word; word++) + if ('\\' != *word) + encode(p, *word); + else + do_escaped(p, &word); - if (NULL == (msec = mdoc_msec2a(meta->msec))) - msec = ""; + if (sv[0] && 0 == sv[1]) + switch (sv[0]) { + case('('): + /* FALLTHROUGH */ + case('['): + /* FALLTHROUGH */ + case('{'): + p->flags |= TERMP_NOSPACE; + break; + default: + break; + } +} - 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; +/* + * 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 +buffer(struct termp *p, char c) +{ + size_t s; - printf("%s(%s)", title, msec); + 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"); /* FIXME: shouldn't be here! */ + p->maxcols = s; + } + p->buf[(int)(p->col)++] = c; +} - 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); +static void +encode(struct termp *p, char c) +{ + + if (' ' != c) { + if (p->under) { + buffer(p, '_'); + buffer(p, 8); + } + if (p->bold) { + buffer(p, c); + buffer(p, 8); + } + } + buffer(p, c); } -int -termprint(const struct mdoc_node *node, - const struct mdoc_meta *meta) +size_t +term_vspan(const struct roffsu *su) { - struct termp p; + double r; - if (ERR == setupterm(NULL, STDOUT_FILENO, NULL)) - return(0); + switch (su->unit) { + case (SCALE_CM): + r = su->scale * 2; + break; + case (SCALE_IN): + r = su->scale * 6; + break; + case (SCALE_PC): + r = su->scale; + break; + case (SCALE_PT): + r = su->scale / 8; + break; + case (SCALE_MM): + r = su->scale / 1000; + break; + case (SCALE_VS): + r = su->scale; + break; + default: + r = su->scale - 1; + break; + } - p.maxvisible = columns < 60 ? 60 : (size_t)columns; - p.maxcols = 1024; - p.indent = p.col = 0; - p.flags = TERMP_NOSPACE; + if (r < 0.0) + r = 0.0; + return(/* LINTED */(size_t) + r); +} - if (NULL == (p.buf = malloc(p.maxcols))) - err(1, "malloc"); - termprint_header(&p, meta); - termprint_r(&p, meta, node); - termprint_footer(&p, meta); +size_t +term_hspan(const struct roffsu *su) +{ + double r; - free(p.buf); + /* XXX: CM, IN, and PT are approximations. */ - return(1); + switch (su->unit) { + case (SCALE_CM): + r = 4 * su->scale; + break; + case (SCALE_IN): + /* XXX: this is an approximation. */ + r = 10 * su->scale; + break; + case (SCALE_PC): + r = (10 * su->scale) / 6; + break; + case (SCALE_PT): + r = (10 * su->scale) / 72; + break; + case (SCALE_MM): + r = su->scale / 1000; /* FIXME: double-check. */ + break; + case (SCALE_VS): + r = su->scale * 2 - 1; /* FIXME: double-check. */ + break; + default: + r = su->scale; + break; + } + + if (r < 0.0) + r = 0.0; + return((size_t)/* LINTED */ + r); }