diff options
Diffstat (limited to 'src/PostscriptDSC.cxx')
-rw-r--r-- | src/PostscriptDSC.cxx | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/src/PostscriptDSC.cxx b/src/PostscriptDSC.cxx new file mode 100644 index 0000000..b8b998a --- /dev/null +++ b/src/PostscriptDSC.cxx @@ -0,0 +1,185 @@ +// +// Postscript Document Structure Convention handling routines. +// +// Copyright 2006 by Johannes Hofmann +// +// This library is free software; you can redistribute it and/or +// modify it under the terms of the GNU Library General Public +// License as published by the Free Software Foundation; either +// version 2 of the License, or (at your option) any later version. +// +// This library 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 +// Library General Public License for more details. +// +// You should have received a copy of the GNU Library General Public +// License along with this library; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 +// USA. +// + +#include <stdlib.h> +#include <string.h> +#include <stdio.h> +#include "PostscriptDSC.H" + +PostscriptDSC::PostscriptDSC() { + bb_x = 0; + bb_y = 0; + bb_w = 594; // A4 + bb_h = 841; // + setup_len = 0; + pages = 0; + page_off = NULL; + page_len = NULL; +} + +PostscriptDSC::~PostscriptDSC() { + if (page_off) { + free(page_off); + } + if (page_len) { + free(page_len); + } +} + +int +PostscriptDSC::parse(int fd) { + FILE *fp; + char linebuf[1024]; + int x, y, w, h; + int p1, p2, ps; + int i = 0; + int bb_read = 0; + + bb_x = 0; + bb_y = 0; + bb_w = 594; // A4 + bb_h = 841; // + setup_len = 0; + pages = 0; + + if (page_off) { + free(page_off); + page_off = NULL; + } + if(page_len) { + free(page_len); + page_len = NULL; + } + + fp = fdopen(fd, "r"); + if (!fp) { + perror("fdopen"); + return 1; + } + + while (fgets(linebuf, sizeof(linebuf), fp) != NULL) { + if (!bb_read && + sscanf(linebuf, "%%%%BoundingBox: %d %d %d %d", &x, &y, &w, &h) == 4) { + bb_x = x; + bb_y = y; + bb_w = w; + bb_h = h; + bb_read++; + } else if (strncmp(linebuf, "%%EndSetup", strlen("%%EndSetup")) == 0) { + setup_len = ftello(fp); + } else if (pages == 0 && sscanf(linebuf, "%%%%Pages: %d", &ps) == 1) { + + pages = ps; + page_off = (size_t*) malloc(sizeof(size_t) * pages); + memset(page_off, 0, sizeof(size_t) * pages); + page_len = (size_t*) malloc(sizeof(size_t) * pages); + memset(page_len, 0, sizeof(size_t) * pages); + + } else if (sscanf(linebuf, "%%%%Page: %d %d", &p1, &p2) == 2) { + + if (!page_off || !page_len) { + fprintf(stderr, "Number of pages not defined\n"); + return 1; + } + + if (p1 > pages || p1 < 1) { + fprintf(stderr, "Page %d out of range (1 - %d)\n", p1, pages); + return 1; + } + if (page_off[p1 - 1] != 0) { + fprintf(stderr, "Page %d already defined\n", p1); + return 1; + } + if (p1 > 1 && page_off[p1 - 2] == NULL) { + fprintf(stderr, "Page %d not yet defined\n", p1 - 1); + return 1; + } + + page_off[p1 - 1] = ftello(fp); + if (p1 > 1) { + page_len[p1 - 2] = page_off[p1 - 1] - page_off[p1 - 2]; + } + } + } + + if (page_len && page_off) { + page_len[p1 - 1] = ftello(fp) - page_off[p1 - 1]; + + for (int i=0; i<pages; i++) { + if (page_off[i] == 0 || page_len[i] == 0) { + fprintf(stderr, "Page %d not defined\n", i); + return 1; + } + } + } else { + return 1; + } + + return 0; +} + +void +PostscriptDSC::get_bounding_box(int *x, int *y, int *w, int *h) { + *x = bb_x; + *y = bb_y; + *w = bb_w; + *h = bb_h; +} + +int +PostscriptDSC::get_pages() { + return pages; +} + +size_t +PostscriptDSC::get_setup_len() { + return setup_len; +} + +size_t +PostscriptDSC::get_page_off(int p) { + if (p < 1 || p > pages) { + return 0; + } else { + return page_off[p - 1]; + } +} + +size_t +PostscriptDSC::get_page_len(int p) { + if (p < 1 || p > pages) { + return 0; + } else { + return page_len[p - 1]; + } +} + +void +PostscriptDSC::print() { + int i; + + printf("x %d, y %d, w %d, h %d\n", bb_x, bb_y, bb_w, bb_h); + printf("setup_len %d\n", setup_len); + for (i=0; i<pages; i++) { + printf("p %d, off %d, len %d\n", i, page_off[i], page_len[i]); + } +} + |