- /* $Id: mdocterm.c,v 1.2 2009/02/22 22:58:39 kristaps Exp $ */
+ /* $Id: mdocterm.c,v 1.10 2009/02/25 12:27:37 kristaps Exp $ */
/*
* Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
*
* PERFORMANCE OF THIS SOFTWARE.
*/
#include <assert.h>
+#include <ctype.h>
#include <err.h>
#include <getopt.h>
+#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
+
+#ifndef __OpenBSD__
+#include <time.h>
+#endif
#include "mmain.h"
#include "term.h"
+#ifdef __NetBSD__
+#define xisspace(x) isspace((int)(x))
+#else
+#define xisspace(x) isspace((x))
+#endif
+
+enum termstyle {
+ STYLE_CLEAR,
+ STYLE_BOLD,
+ STYLE_UNDERLINE
+};
+
+static void body(struct termp *,
+ const struct mdoc_meta *,
+ const struct mdoc_node *);
+static void header(struct termp *,
+ const struct mdoc_meta *);
+static void footer(struct termp *,
+ const struct mdoc_meta *);
+
+static void pword(struct termp *, const char *, size_t);
+static void pescape(struct termp *,
+ const char *, size_t *, size_t);
+static void chara(struct termp *, char);
+static void stringa(struct termp *, const char *);
+static void style(struct termp *, enum termstyle);
+
+#ifdef __linux__
+extern size_t strlcat(char *, const char *, size_t);
+extern size_t strlcpy(char *, const char *, size_t);
+#endif
+
+
int
main(int argc, char *argv[])
{
struct mmain *p;
const struct mdoc *mdoc;
- int c;
-
- extern int optreset;
- extern int optind;
+ struct termp termp;
p = mmain_alloc();
- if ( ! mmain_getopt(p, argc, argv, ""))
+ if ( ! mmain_getopt(p, argc, argv, NULL, NULL, NULL, NULL))
mmain_exit(p, 1);
- optreset = optind = 1;
-
- while (-1 != (c = getopt(argc, argv, "")))
- switch (c) {
- default:
- mmain_usage("");
- mmain_exit(p, 1);
- /* NOTREACHED */
- }
-
if (NULL == (mdoc = mmain_mdoc(p)))
mmain_exit(p, 1);
- termprint(mdoc_node(mdoc), mdoc_meta(mdoc));
+ termp.maxrmargin = 80; /* XXX */
+ termp.rmargin = termp.maxrmargin;
+ termp.maxcols = 1024;
+ termp.offset = termp.col = 0;
+ termp.flags = TERMP_NOSPACE;
+
+ if (NULL == (termp.buf = malloc(termp.maxcols)))
+ err(1, "malloc");
+
+ header(&termp, mdoc_meta(mdoc));
+ body(&termp, mdoc_meta(mdoc), mdoc_node(mdoc));
+ footer(&termp, mdoc_meta(mdoc));
+
+ free(termp.buf);
+
mmain_exit(p, 0);
/* NOTREACHED */
}
+void
+flushln(struct termp *p)
+{
+ size_t i, j, vsz, vis, maxvis;
+
+ /*
+ * 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;
+ vis = 0;
+
+ /*
+ * If in the standard case (left-justified), then begin with our
+ * indentation, otherwise (columns, etc.) just start spitting
+ * out text.
+ */
+
+ if ( ! (p->flags & TERMP_NOLPAD))
+ /* LINTED */
+ for (j = 0; j < p->offset; j++)
+ putchar(' ');
+
+ /*
+ * If we're literal, print out verbatim.
+ */
+ if (p->flags & TERMP_LITERAL) {
+ /* FIXME: count non-printing chars. */
+ for (i = 0; i < p->col; i++)
+ putchar(p->buf[i]);
+ putchar('\n');
+ p->col = 0;
+ return;
+ }
+
+ for (i = 0; i < p->col; i++) {
+ /*
+ * Count up visible word characters. Control sequences
+ * (starting with the CSI) aren't counted.
+ */
+ assert( ! xisspace(p->buf[i]));
+
+ /* LINTED */
+ for (j = i, vsz = 0; j < p->col; j++) {
+ if (xisspace(p->buf[j]))
+ break;
+ else if (27 == p->buf[j]) {
+ assert(j + 4 <= p->col);
+ j += 3;
+ } else
+ vsz++;
+ }
+ assert(vsz > 0);
+
+ /*
+ * If a word is too long and we're within a line, put it
+ * on the next line. Puke if we're being asked to write
+ * something that will exceed the right margin (i.e.,
+ * from a fresh line or when we're not allowed to break
+ * the line with TERMP_NOBREAK).
+ */
+
+ if (vis && vis + vsz >= maxvis) {
+ /* FIXME */
+ if (p->flags & TERMP_NOBREAK)
+ errx(1, "word breaks right margin");
+ putchar('\n');
+ for (j = 0; j < p->offset; j++)
+ putchar(' ');
+ vis = 0;
+ } else if (vis + vsz >= maxvis)
+ /* FIXME */
+ errx(1, "word breaks right margin");
+
+ /*
+ * Write out the word and a trailing space. Omit the
+ * space if we're the last word in the line.
+ */
+
+ for ( ; i < p->col; i++) {
+ if (xisspace(p->buf[i]))
+ break;
+ putchar(p->buf[i]);
+ }
+ vis += vsz;
+ if (i < p->col) {
+ putchar(' ');
+ vis++;
+ }
+ }
+
+ /*
+ * If we're not to right-marginalise it (newline), then instead
+ * pad to the right margin and stay off.
+ */
+
+ if (p->flags & TERMP_NOBREAK) {
+ for ( ; vis <= maxvis; vis++)
+ putchar(' ');
+ } else
+ putchar('\n');
+
+ p->col = 0;
+}
+
+
+void
+newln(struct termp *p)
+{
+
+ /*
+ * A newline only breaks an existing line; it won't assert
+ * vertical space.
+ */
+ p->flags |= TERMP_NOSPACE;
+ if (0 == p->col)
+ return;
+ flushln(p);
+}
+
+
+void
+vspace(struct termp *p)
+{
+
+ /*
+ * Asserts a vertical space (a full, empty line-break between
+ * lines).
+ */
+ newln(p);
+ putchar('\n');
+}
+
+
+static void
+stringa(struct termp *p, const char *s)
+{
+
+ /* XXX - speed up if not passing to chara. */
+ for ( ; *s; s++)
+ chara(p, *s);
+}
+
+
+static void
+chara(struct termp *p, char c)
+{
+
+ /* TODO: dynamically expand the buffer. */
+ if (p->col + 1 >= p->maxcols)
+ errx(1, "line overrun");
+ p->buf[(p->col)++] = c;
+}
+
+
+static void
+style(struct termp *p, enum termstyle esc)
+{
+
+ if (p->col + 4 >= p->maxcols)
+ errx(1, "line overrun");
+
+ p->buf[(p->col)++] = 27;
+ p->buf[(p->col)++] = '[';
+ switch (esc) {
+ case (STYLE_CLEAR):
+ p->buf[(p->col)++] = '0';
+ break;
+ case (STYLE_BOLD):
+ p->buf[(p->col)++] = '1';
+ break;
+ case (STYLE_UNDERLINE):
+ p->buf[(p->col)++] = '4';
+ break;
+ default:
+ abort();
+ /* NOTREACHED */
+ }
+ p->buf[(p->col)++] = 'm';
+}
+
+
+static void
+pescape(struct termp *p, const char *word, size_t *i, size_t len)
+{
+
+ (*i)++;
+ assert(*i < len);
+
+ if ('(' == word[*i]) {
+ /* Two-character escapes. */
+ (*i)++;
+ assert(*i + 1 < len);
+
+ if ('r' == word[*i] && 'B' == word[*i + 1])
+ chara(p, ']');
+ else if ('l' == word[*i] && 'B' == word[*i + 1])
+ chara(p, '[');
+ else if ('<' == word[*i] && '-' == word[*i + 1])
+ stringa(p, "<-");
+ else if ('-' == word[*i] && '>' == word[*i + 1])
+ stringa(p, "->");
+ else if ('l' == word[*i] && 'q' == word[*i + 1])
+ chara(p, '\"');
+ else if ('r' == word[*i] && 'q' == word[*i + 1])
+ chara(p, '\"');
+
+ (*i)++;
+ return;
+
+ } else if ('[' != word[*i]) {
+ /* One-character escapes. */
+ switch (word[*i]) {
+ case ('\\'):
+ /* FALLTHROUGH */
+ case ('\''):
+ /* FALLTHROUGH */
+ case ('`'):
+ /* FALLTHROUGH */
+ case ('-'):
+ /* FALLTHROUGH */
+ case ('.'):
+ chara(p, word[*i]);
+ default:
+ break;
+ }
+ return;
+ }
+ /* n-character escapes. */
+}
+
+
+static void
+pword(struct termp *p, const char *word, size_t len)
+{
+ size_t i;
+
+ /*assert(len > 0);*/ /* Can be, if literal. */
+
+ if ( ! (p->flags & TERMP_NOSPACE) &&
+ ! (p->flags & TERMP_LITERAL))
+ chara(p, ' ');
+
+ p->flags &= ~TERMP_NOSPACE;
+
+ if (p->flags & TERMP_BOLD)
+ style(p, STYLE_BOLD);
+ if (p->flags & TERMP_UNDERLINE)
+ style(p, STYLE_UNDERLINE);
+
+ for (i = 0; i < len; i++) {
+ if ('\\' == word[i]) {
+ pescape(p, word, &i, len);
+ continue;
+ }
+ chara(p, word[i]);
+ }
+
+ if (p->flags & TERMP_BOLD ||
+ p->flags & TERMP_UNDERLINE)
+ style(p, STYLE_CLEAR);
+}
+
+
+void
+word(struct termp *p, const char *word)
+{
+ size_t i, j, len;
+
+ if (p->flags & TERMP_LITERAL) {
+ pword(p, word, strlen(word));
+ return;
+ }
+
+ len = strlen(word);
+ assert(len > 0);
+
+ if (mdoc_isdelim(word)) {
+ if ( ! (p->flags & TERMP_IGNDELIM))
+ p->flags |= TERMP_NOSPACE;
+ p->flags &= ~TERMP_IGNDELIM;
+ }
+
+ /* LINTED */
+ for (j = i = 0; i < len; i++) {
+ if ( ! xisspace(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);
+ }
+}
+
+
+static void
+body(struct termp *p, const struct mdoc_meta *meta,
+ const struct mdoc_node *node)
+{
+ int dochild;
+ struct termpair pair;
+
+ /* Pre-processing. */
+
+ dochild = 1;
+ pair.type = 0;
+ pair.offset = 0;
+ pair.flag = 0;
+
+ if (MDOC_TEXT != node->type) {
+ if (termacts[node->tok].pre)
+ if ( ! (*termacts[node->tok].pre)(p, &pair, meta, node))
+ dochild = 0;
+ } else /* MDOC_TEXT == node->type */
+ word(p, node->data.text.string);
+
+ /* Children. */
+
+ if (TERMPAIR_FLAG & pair.type)
+ p->flags |= pair.flag;
+
+ if (dochild && node->child)
+ body(p, meta, node->child);
+
+ if (TERMPAIR_FLAG & pair.type)
+ p->flags &= ~pair.flag;
+
+ /* Post-processing. */
+
+ if (MDOC_TEXT != node->type)
+ if (termacts[node->tok].post)
+ (*termacts[node->tok].post)(p, &pair, meta, node);
+
+ /* Siblings. */
+
+ if (node->next)
+ body(p, meta, node->next);
+}
+
+
+static void
+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->rmargin)))
+ err(1, "malloc");
+ if (NULL == (os = malloc(p->rmargin)))
+ err(1, "malloc");
+
+ tm = localtime(&meta->date);
+
+#ifdef __OpenBSD__
+ if (NULL == strftime(buf, p->rmargin, "%B %d, %Y", tm))
+#else
+ if (0 == strftime(buf, p->rmargin, "%B %d, %Y", tm))
+#endif
+ err(1, "strftime");
+
+ osz = strlcpy(os, meta->os, p->rmargin);
+
+ sz = strlen(buf);
+ ssz = sz + osz + 1;
+
+ if (ssz > p->rmargin) {
+ ssz -= p->rmargin;
+ assert(ssz <= osz);
+ os[osz - ssz] = 0;
+ ssz = 1;
+ } else
+ ssz = p->rmargin - ssz + 1;
+
+ printf("\n");
+ printf("%s", os);
+ for (i = 0; i < ssz; i++)
+ printf(" ");
+
+ printf("%s\n", buf);
+ fflush(stdout);
+
+ free(buf);
+ free(os);
+}
+
+
+static void
+header(struct termp *p, const struct mdoc_meta *meta)
+{
+ char *buf, *title;
+ const char *pp, *msec;
+ size_t ssz, tsz, ttsz, i;;
+
+ if (NULL == (buf = malloc(p->rmargin)))
+ err(1, "malloc");
+ if (NULL == (title = malloc(p->rmargin)))
+ err(1, "malloc");
+
+ 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->rmargin);
+ assert(tsz < p->rmargin);
+
+ if ((pp = mdoc_arch2a(meta->arch))) {
+ tsz = strlcat(buf, " (", p->rmargin);
+ assert(tsz < p->rmargin);
+ tsz = strlcat(buf, pp, p->rmargin);
+ assert(tsz < p->rmargin);
+ tsz = strlcat(buf, ")", p->rmargin);
+ assert(tsz < p->rmargin);
+ }
+
+ ttsz = strlcpy(title, meta->title, p->rmargin);
+
+ if (NULL == (msec = mdoc_msec2a(meta->msec)))
+ msec = "";
+
+ ssz = (2 * (ttsz + 2 + strlen(msec))) + tsz + 2;
+
+ if (ssz > p->rmargin) {
+ if ((ssz -= p->rmargin) % 2)
+ ssz++;
+ ssz /= 2;
+
+ assert(ssz <= ttsz);
+ title[ttsz - ssz] = 0;
+ ssz = 1;
+ } else
+ ssz = ((p->rmargin - 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);
+}
git.ckatri.com / mandoc.git / blobdiff