From 2ef43af0215fc52966c9bbd8d5df6db6d6af224b Mon Sep 17 00:00:00 2001 From: Norbert Preining Date: Tue, 28 Jun 2022 03:01:06 +0000 Subject: CTAN sync 202206280301 --- dviware/dvisirule/src/dvisirule-bin.c | 474 ++++++++++++++++++++++++++++++++++ 1 file changed, 474 insertions(+) create mode 100644 dviware/dvisirule/src/dvisirule-bin.c (limited to 'dviware/dvisirule/src/dvisirule-bin.c') diff --git a/dviware/dvisirule/src/dvisirule-bin.c b/dviware/dvisirule/src/dvisirule-bin.c new file mode 100644 index 0000000000..d5c06d419d --- /dev/null +++ b/dviware/dvisirule/src/dvisirule-bin.c @@ -0,0 +1,474 @@ +/* + * Copyright (C) 2012-2022 Jiro Senju + * + * This package is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * any later version. + * + * This package is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this package. If not, see . + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef HAVE_ARPA_INET_H +#include +#elif defined(HAVE_NETINET_IN_H) +#include +#else +/* What can I do? */ +#endif + +#include +#include +#include +#include +#include + +#ifdef HAVE_FCNTL_H +#include +#else +/* What can I do? */ +#endif + +#ifdef HAVE_LIMITS_H +#include +#else +/* What can I do? */ +#endif + +#include + +#ifdef HAVE_STDLIB_H +#include +#else +/* What can I do? */ +#endif + +#ifdef HAVE_STRING_H +#include +#else +/* What can I do? */ +#endif + +#ifdef HAVE_UNISTD_H +#include +#else +/* What can I do? */ +#endif + +#if HAVE_MALLOC != 1 || HAVE_MEMSET != 1 || HAVE_MMAP != 1 || HAVE_REALLOC != 1 +#error malloc/memset/mmap/realloc unimplemented? +#endif + +#include "dvi.h" + +/* ---------------------------------------------------------------------- */ + +#if 0 +#define Dpri(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__) +#else +#define Dpri(fmt, ...) do {} while (0) +#endif + +#define Errx(cond, fmt, args...) \ + if (cond) \ + errx(errno, "%s:%d: " fmt, __func__, __LINE__, ##args) +#define Err(cond, str) Errx(cond, "%s %m", str) + +#define ExpandStep 25 + +struct dvifile { + int fd; + unsigned char *p; +} src, dst; + +/* ---------------------------------------------------------------------- */ + +/* single SETRULE/PUTRULE with its color and coordinate */ +union path { + unsigned char a[64]; + struct { + int n, color; + unsigned char p[]; + }; +}; + +#define PathCk(path) \ + Errx(path->n >= sizeof(*path) - sizeof(path->n), "%d >= %lu", \ + path->n, (unsigned long)sizeof(*path) - sizeof(path->n)); + +static void p_push(union path *path) +{ + unsigned char *p; + + p = path->p + path->n; + *p = PUSH; + path->n++; + PathCk(path); +} + +static void p_pop(union path *path) +{ + unsigned char *p; + + p = path->p + path->n; + *p = POP; + path->n++; + PathCk(path); +} + +static int dvi_move(unsigned char *p, unsigned char op, int v) +{ + int n; + union { + int v; + unsigned char a[sizeof(int)]; + } u; + + Dpri("%p, 0x%x, %d\n", p, op, v); + if (!v) + return 0; + + u.v = htonl(v); + n = 5; + *p++ = op + 3; + memcpy(p, u.a + 0, 4); + + return n; +} + +static void p_moveto(union path *path, int h, int v) +{ + int n; + + n = dvi_move(path->p + path->n, RIGHT1, h); + path->n += n; + PathCk(path); + n = dvi_move(path->p + path->n, DOWN1, v); + path->n += n; + PathCk(path); +} + +static void p_pushcolor(union path *path, unsigned int offset) +{ + //XXX1 + static unsigned char cmd[] = "\xef\x11" "color push gray 0"; + unsigned char *p, *s; + unsigned int len; + + path->color = path->n; + p = path->p + path->n; + if (offset) { + s = src.p + offset; + len = 1 + 1 + src.p[offset + 1]; + } else { + s = cmd; + len = sizeof(cmd) - 1; + } + path->n += len; + PathCk(path); + memcpy(p, s, len); +} + +static void p_rule(union path *path, unsigned int offset) +{ + unsigned char *p; + const unsigned int len = 1 + 4 + 4; + + p = path->p + path->n; + path->n += len; + PathCk(path); + /* no setrule since it moves the current-point */ + *p++ = PUTRULE; + memcpy(p, src.p + offset + 1, len - 1); +} + +static void p_popcolor(union path *path) +{ + //XXX1 + static char cmd[] = "\xef\x09" "color pop"; + const unsigned int len = sizeof(cmd) - 1; + unsigned char *p; + + p = path->p + path->n; + path->n += len; + PathCk(path); + memcpy(p, cmd, len); +} + +/* ---------------------------------------------------------------------- */ + +/* all SETRULE/PUTRULE in a page */ +struct page { + unsigned int total, cur; + int h, v; + /* to be qsort-able, use array instead of list */ + union path **path; +}; + +static int page_init(struct page *page) +{ + page->total = ExpandStep; + page->cur = 0; + page->path = malloc(sizeof(page->path) * page->total); + return !!page->path; +} + +static void page_reinit(struct page *page) +{ + page->cur = 0; +} + +static int path_append(struct page *page, union path *path) +{ + union path **p; + + if (page->cur + 1 >= page->total) { + /* expand */ + page->total += ExpandStep; + p = realloc(page->path, sizeof(page->path) * page->total); + Err(!p, "realloc"); + page->path = p; + } + page->path[page->cur++] = path; + + return 0; +} + +static int color_sort(const void *__a, const void *__b) +{ + const union path **_a = (const union path **)__a, + **_b = (const union path **)__b; + const union path *a = *_a, *b = *_b; + char ca[32], cb[32]; + int l; + + l = a->p[a->color + 1]; + memcpy(ca, a->p + a->color + 2, l); + ca[l] = 0; + + l = b->p[b->color + 1]; + memcpy(cb, b->p + b->color + 2, l); + cb[l] = 0; + + l = strcmp(ca, cb); + if (l > 0) + l = -1; + else if (l < 0) + l = 1; + return l; +} + +static void page_write(int fd, struct page *page) +{ + int i, n; + union path *path, origin; + ssize_t ssz; + + origin.n = 0; + p_push(&origin); + p_moveto(&origin, -page->h, -page->v); + ssz = write(fd, origin.p, origin.n); + Err(ssz != origin.n, "write"); + + n = page->cur; + qsort(page->path, n, sizeof(*page->path), color_sort); + for (i = 0; i < n; i++) { + path = page->path[i]; + ssz = write(fd, path->p, path->n); + Err(ssz != path->n, "write"); + } + + origin.n = 0; + p_pop(&origin); + ssz = write(fd, origin.p, origin.n); + Err(ssz != origin.n, "write"); +} + +/* ---------------------------------------------------------------------- */ + +static void postamble(unsigned int last, unsigned int ofbop, unsigned int srcsz) +{ + unsigned int post, prev; + ssize_t ssz; + int n; + + Errx(src.p[last] != POST, "last %u, 0x%x expects 0x%x", + last, src.p[last], POST); + Dpri("last %u, 0x%x\n", last, last); + post = lseek(dst.fd, 0, SEEK_CUR); + ssz = write(dst.fd, src.p + last, 1); + Err(ssz != 1, "write"); + last++; + ofbop = htonl(ofbop); + ssz = write(dst.fd, &ofbop, 4); + Err(ssz != 4, "write"); + last += 4; + ssz = write(dst.fd, src.p + last, 4 * 6); + Err(ssz != 4 * 6, "write"); + last += 4 * 6; + + prev = last; + while (src.p[last] != POSTPOST) { + n = 0; + switch (src.p[last]) { + case FNTDEF4: + n++; + case FNTDEF3: + n++; + case FNTDEF2: + n++; + case FNTDEF1: + n++; + break; + default: + Errx(src.p[last], "0x%x at %u(0x%x)", + src.p[last], last, last); + } + Dpri("last %u(0x%x), n %d\n", last, last, n); + n += 4 * 3 + 1 + 1; + n += src.p[last + n] + 1; + Dpri("n %d\n", n); + last += n; + } + ssz = write(dst.fd, src.p + prev, last - prev); + Err(ssz != last - prev, "write"); + + /* post_post */ + Dpri("last %u, 0x%x\n", last, last); + Errx(src.p[last] != POSTPOST, "last %u, 0x%x expects 0x%x", + last, src.p[last], POSTPOST); + ssz = write(dst.fd, src.p + last, 1); + Err(ssz != 1, "write"); + last++; + post = htonl(post); + ssz = write(dst.fd, &post, 4); + Err(ssz != 4, "write"); + last += 4; + ssz = write(dst.fd, src.p + last, srcsz - last); + Err(ssz != srcsz - last, "write"); +} + +/* + * in dvi, all offsets are represented in 32 bits. + * it means no 'long', 'long long', or 'loff_t' are necessary. + */ + +int main(int argc, char *argv[]) +{ + int e, n, h, v; + unsigned int height, width, hpx, wpx, rule_op, last; + /* offsets */ + unsigned int ofbop, ofcolor, ofrule, ofeop, ofline; + float gray; + char cmd[BUFSIZ], op[BUFSIZ], colorpush[64], *cmdp, c; + struct stat st; + union path *path; + struct page page; + ssize_t ssz; + + src.fd = open(argv[1], O_RDWR); + Err(src.fd < 0, argv[1]); + + last = 0; + e = fstat(src.fd, &st); + Err(e, argv[1]); + src.p = mmap(NULL, st.st_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, + src.fd, 0); + Err(src.p == MAP_FAILED, argv[1]); + + dst.fd = open(argv[2], O_WRONLY | O_CREAT | O_TRUNC, 0644); + Err(dst.fd < 0, argv[2]); + + page_init(&page); + while (1) { + /* read the output of marker.awk */ + cmdp = fgets(cmd, sizeof(cmd), stdin); + if (!cmdp) + break; + + if (*cmdp == 'h') { + /* + * depends on the TeX version or variant? + * h=-31 v=176 :{239}color_push_gray_0 + * : putrule {137} height 26214, width 2290850 + * (2x146 pixels) + */ + n = sscanf(cmdp, "h=%d v=%d " + "%u:{239}color_push_%s " + "%u: %s {%u} height %u, width %u " + "(%ux%u pixels)", + &h, &v, + &ofcolor, colorpush, + &ofrule, op, &rule_op, + &height, &width, + &hpx, &wpx); + if (n != 11) + n = sscanf(cmdp, "h=%d v=%d " + "%u:{239}pdf:bcolor [%f] " + "%u: %s {%u} height %u, width %u " + "(%ux%u pixels)", + &h, &v, + &ofcolor, &gray, + &ofrule, op, &rule_op, + &height, &width, + &hpx, &wpx); + Errx(n != 11, "n %d, %s", n, cmdp); + + path = malloc(sizeof(*path)); + Err(!path, "malloc"); + + path->n = 0; + p_push(path); + p_moveto(path, h, v); + p_pushcolor(path, ofcolor); + p_rule(path, ofrule); + p_popcolor(path); + p_pop(path); + path_append(&page, path); + } else if (!strncmp(cmdp, "bop", 3)) { + /* bop : beginning of page 1 */ + n = sscanf(cmdp, "bop %u: beginning %s", + &ofbop, op); + Errx(n != 2, "n %d, %s", n, cmdp); + } else if (!strncmp(cmdp, "bol", 3) + || !strncmp(cmdp, "eol", 3)) { + /* bol : xxx ' {239}sirule BOL' */ + /* eol : xxx ' {239}sirule EOL' */ + n = sscanf(cmdp, "%col %u: %s", + &c, &ofline, op); + Errx(n != 3, "n %d, %s", n, cmdp); + memset(src.p + ofline, NOP, src.p[ofline + 1] + 2); + } else { + /* : eop {140} h=0 v=2206 */ + n = sscanf(cmdp, "%u: eop {140} h=%d v=%d", + &ofeop, &page.h, &page.v); + Errx(n != 3, "n %d, %s", n, cmdp); + + Dpri("last %u\n", last); + ssz = write(dst.fd, src.p + last, ofeop); + Errx(ssz != ofeop, "write, %p, %u, %u", + src.p, last, ofeop); + last = ofeop; + Dpri("last %u, 0x%x\n", last, last); + page_write(dst.fd, &page); + ssz = write(dst.fd, src.p + last, 1); + Err(ssz != 1, "write"); + last++; + page_reinit(&page); + } + } + + postamble(last, ofbop, st.st_size); + + return 0; +} -- cgit v1.2.3