From 09358aa7f255d1cd8d47dd152c480d4818cb24cf Mon Sep 17 00:00:00 2001
From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Thu, 15 Apr 2004 08:50:04 +0000
Subject: [PATCH] Put the document's version IDs into comments in the PS and
 PDF output files.

git-svn-id: svn://svn.tartarus.org/sgt/halibut@4079 cda61777-01e9-0310-a592-d414129be87e
---
 bk_paper.c |  3 +--
 bk_pdf.c   | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 bk_ps.c    | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 100 insertions(+), 3 deletions(-)

diff --git a/bk_paper.c b/bk_paper.c
index 68ebc83..2065151 100644
--- a/bk_paper.c
+++ b/bk_paper.c
@@ -12,8 +12,6 @@
 /*
  * TODO in future work:
  * 
- *  - include the version IDs.
- * 
  *  - linearised PDF, perhaps?
  * 
  *  - compression of output files. For the actual text display,
@@ -72,6 +70,7 @@
  *     * a hyphen in a word by itself might prefer to be an en-dash
  *     * (Americans might even want a convenient way to use an
  * 	 em-dash)
+ *     * DON'T DO ANY OF THE ABOVE WITHIN \c OR \cw!
  *     * substituting `minus' for `hyphen' in the standard encoding
  * 	 is probably preferable in Courier, though certainly not in
  * 	 the main text font
diff --git a/bk_pdf.c b/bk_pdf.c
index b68598c..fe10894 100644
--- a/bk_pdf.c
+++ b/bk_pdf.c
@@ -62,6 +62,7 @@ static void make_pages_node(object *node, object *parent, page_data *first,
 			    page_data *last, object *resources);
 static int make_outline(object *parent, outline_element *start, int n,
 			int open);
+static int pdf_versionid(FILE *fp, word *words);
 
 void pdf_backend(paragraph *sourceform, keywordlist *keywords,
 		 indexdata *idx, void *vdoc) {
@@ -372,9 +373,13 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
     }
 
     /*
-     * Header
+     * Header. I'm going to put the version IDs in the header as
+     * well, simply in PDF comments.
      */
     fileoff = fprintf(fp, "%%PDF-1.3\n");
+    for (p = sourceform; p; p = p->next)
+	if (p->type == para_VersionID)
+	    fileoff += pdf_versionid(fp, p->words);
 
     /*
      * Body
@@ -660,3 +665,47 @@ static int make_outline(object *parent, outline_element *items, int n,
 
     return totalcount;
 }
+
+static int pdf_versionid(FILE *fp, word *words)
+{
+    int ret;
+
+    ret = fprintf(fp, "%% ");
+
+    for (; words; words = words->next) {
+	char *text;
+	int type;
+
+	switch (words->type) {
+	  case word_HyperLink:
+	  case word_HyperEnd:
+	  case word_UpperXref:
+	  case word_LowerXref:
+	  case word_XrefEnd:
+	  case word_IndexRef:
+	    continue;
+	}
+
+	type = removeattr(words->type);
+
+	switch (type) {
+	  case word_Normal:
+	    text = utoa_dup(words->text);
+	    break;
+	  case word_WhiteSpace:
+	    text = dupstr(" ");
+	    break;
+	  case word_Quote:
+	    text = dupstr("'");
+	    break;
+	}
+
+	fputs(text, fp);
+	ret += strlen(text);
+	sfree(text);
+    }
+
+    ret += fprintf(fp, "\n");
+
+    return ret;
+}
diff --git a/bk_ps.c b/bk_ps.c
index 77b0ab5..c9f4223 100644
--- a/bk_ps.c
+++ b/bk_ps.c
@@ -6,6 +6,8 @@
 #include "halibut.h"
 #include "paper.h"
 
+static void ps_versionid(FILE *fp, word *words);
+
 paragraph *ps_config_filename(char *filename)
 {
     paragraph *p;
@@ -74,6 +76,14 @@ void ps_backend(paragraph *sourceform, keywordlist *keywords,
     fprintf(fp, "%%%%EndProlog\n");
 
     fprintf(fp, "%%%%BeginSetup\n");
+
+    /*
+     * This is as good a place as any to put version IDs.
+     */
+    for (p = sourceform; p; p = p->next)
+	if (p->type == para_VersionID)
+	    ps_versionid(fp, p->words);
+
     /*
      * Re-encode and re-metric the fonts.
      */
@@ -169,3 +179,42 @@ void ps_backend(paragraph *sourceform, keywordlist *keywords,
 
     sfree(filename);
 }
+
+static void ps_versionid(FILE *fp, word *words)
+{
+    fprintf(fp, "%% ");
+
+    for (; words; words = words->next) {
+	char *text;
+	int type;
+
+	switch (words->type) {
+	  case word_HyperLink:
+	  case word_HyperEnd:
+	  case word_UpperXref:
+	  case word_LowerXref:
+	  case word_XrefEnd:
+	  case word_IndexRef:
+	    continue;
+	}
+
+	type = removeattr(words->type);
+
+	switch (type) {
+	  case word_Normal:
+	    text = utoa_dup(words->text);
+	    break;
+	  case word_WhiteSpace:
+	    text = dupstr(" ");
+	    break;
+	  case word_Quote:
+	    text = dupstr("'");
+	    break;
+	}
+
+	fputs(text, fp);
+	sfree(text);
+    }
+
+    fprintf(fp, "\n");
+}
-- 
2.11.0