more files
diff --git a/src/cmd/postscript/tr2post/ps_include.c b/src/cmd/postscript/tr2post/ps_include.c
new file mode 100644
index 0000000..af30ff2
--- /dev/null
+++ b/src/cmd/postscript/tr2post/ps_include.c
@@ -0,0 +1,191 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <stdio.h>
+#include "../common/common.h"
+#include "ps_include.h"
+
+extern int curpostfontid;
+extern int curfontsize;
+
+typedef struct {long start, end;} Section;
+static char *buf;
+
+static void
+copy(Biobuf *fin, Biobuf *fout, Section *s) {
+ int cond;
+ if (s->end <= s->start)
+ return;
+ Bseek(fin, s->start, 0);
+ while (Bseek(fin, 0L, 1) < s->end && (buf=Brdline(fin, '\n')) != NULL){
+ /*
+ * We have to be careful here, because % can legitimately appear
+ * in Ascii85 encodings, and must not be elided.
+ * The goal here is to make any DSC comments impotent without
+ * actually changing the behavior of the Postscript.
+ * Since stripping ``comments'' breaks Ascii85, we can instead just
+ * indent comments a space, which turns DSC comments into non-DSC comments
+ * and has no effect on binary encodings, which are whitespace-blind.
+ */
+ if(buf[0] == '%')
+ Bputc(fout, ' ');
+ Bwrite(fout, buf, Blinelen(fin));
+ }
+}
+
+/*
+ *
+ * Reads a PostScript file (*fin), and uses structuring comments to locate the
+ * prologue, trailer, global definitions, and the requested page. After the whole
+ * file is scanned, the special ps_include PostScript definitions are copied to
+ * *fout, followed by the prologue, global definitions, the requested page, and
+ * the trailer. Before returning the initial environment (saved in PS_head) is
+ * restored.
+ *
+ * By default we assume the picture is 8.5 by 11 inches, but the BoundingBox
+ * comment, if found, takes precedence.
+ *
+ */
+/* *fin, *fout; /* input and output files */
+/* page_no; /* physical page number from *fin */
+/* whiteout; /* erase picture area */
+/* outline; /* draw a box around it and */
+/* scaleboth; /* scale both dimensions - if not zero */
+/* cx, cy; /* center of the picture and */
+/* sx, sy; /* its size - in current coordinates */
+/* ax, ay; /* left-right, up-down adjustment */
+/* rot; /* rotation - in clockwise degrees */
+
+void
+ps_include(Biobuf *fin, Biobuf *fout, int page_no, int whiteout,
+ int outline, int scaleboth, double cx, double cy, double sx, double sy,
+ double ax, double ay, double rot) {
+ char **strp;
+ int foundpage = 0; /* found the page when non zero */
+ int foundpbox = 0; /* found the page bounding box */
+ int nglobal = 0; /* number of global defs so far */
+ int maxglobal = 0; /* and the number we've got room for */
+ Section prolog, page, trailer; /* prologue, page, and trailer offsets */
+ Section *global; /* offsets for all global definitions */
+ double llx, lly; /* lower left and */
+ double urx, ury; /* upper right corners - default coords */
+ double w = whiteout != 0; /* mostly for the var() macro */
+ double o = outline != 0;
+ double s = scaleboth != 0;
+ int i; /* loop index */
+
+#define has(word) (strncmp(buf, word, strlen(word)) == 0)
+#define grab(n) ((Section *)(nglobal \
+ ? realloc((char *)global, n*sizeof(Section)) \
+ : calloc(n, sizeof(Section))))
+
+ llx = lly = 0; /* default BoundingBox - 8.5x11 inches */
+ urx = 72 * 8.5;
+ ury = 72 * 11.0;
+
+ /* section boundaries and bounding box */
+
+ prolog.start = prolog.end = 0;
+ page.start = page.end = 0;
+ trailer.start = 0;
+ Bseek(fin, 0L, 0);
+
+ while ((buf=Brdline(fin, '\n')) != NULL) {
+ buf[Blinelen(fin)-1] = '\0';
+ if (!has("%%"))
+ continue;
+ else if (has("%%Page: ")) {
+ if (!foundpage)
+ page.start = Bseek(fin, 0L, 1);
+ sscanf(buf, "%*s %*s %d", &i);
+ if (i == page_no)
+ foundpage = 1;
+ else if (foundpage && page.end <= page.start)
+ page.end = Bseek(fin, 0L, 1);
+ } else if (has("%%EndPage: ")) {
+ sscanf(buf, "%*s %*s %d", &i);
+ if (i == page_no) {
+ foundpage = 1;
+ page.end = Bseek(fin, 0L, 1);
+ }
+ if (!foundpage)
+ page.start = Bseek(fin, 0L, 1);
+ } else if (has("%%PageBoundingBox: ")) {
+ if (i == page_no) {
+ foundpbox = 1;
+ sscanf(buf, "%*s %lf %lf %lf %lf",
+ &llx, &lly, &urx, &ury);
+ }
+ } else if (has("%%BoundingBox: ")) {
+ if (!foundpbox)
+ sscanf(buf,"%*s %lf %lf %lf %lf",
+ &llx, &lly, &urx, &ury);
+ } else if (has("%%EndProlog") || has("%%EndSetup") || has("%%EndDocumentSetup"))
+ prolog.end = page.start = Bseek(fin, 0L, 1);
+ else if (has("%%Trailer"))
+ trailer.start = Bseek(fin, 0L, 1);
+ else if (has("%%BeginGlobal")) {
+ if (page.end <= page.start) {
+ if (nglobal >= maxglobal) {
+ maxglobal += 20;
+ global = grab(maxglobal);
+ }
+ global[nglobal].start = Bseek(fin, 0L, 1);
+ }
+ } else if (has("%%EndGlobal"))
+ if (page.end <= page.start)
+ global[nglobal++].end = Bseek(fin, 0L, 1);
+ }
+ Bseek(fin, 0L, 2);
+ if (trailer.start == 0)
+ trailer.start = Bseek(fin, 0L, 1);
+ trailer.end = Bseek(fin, 0L, 1);
+
+ if (page.end <= page.start)
+ page.end = trailer.start;
+
+/*
+fprint(2, "prolog=(%d,%d)\n", prolog.start, prolog.end);
+fprint(2, "page=(%d,%d)\n", page.start, page.end);
+for(i = 0; i < nglobal; i++)
+ fprint(2, "global[%d]=(%d,%d)\n", i, global[i].start, global[i].end);
+fprint(2, "trailer=(%d,%d)\n", trailer.start, trailer.end);
+*/
+
+ /* all output here */
+ for (strp = PS_head; *strp != NULL; strp++)
+ Bwrite(fout, *strp, strlen(*strp));
+
+ Bprint(fout, "/llx %g def\n", llx);
+ Bprint(fout, "/lly %g def\n", lly);
+ Bprint(fout, "/urx %g def\n", urx);
+ Bprint(fout, "/ury %g def\n", ury);
+ Bprint(fout, "/w %g def\n", w);
+ Bprint(fout, "/o %g def\n", o);
+ Bprint(fout, "/s %g def\n", s);
+ Bprint(fout, "/cx %g def\n", cx);
+ Bprint(fout, "/cy %g def\n", cy);
+ Bprint(fout, "/sx %g def\n", sx);
+ Bprint(fout, "/sy %g def\n", sy);
+ Bprint(fout, "/ax %g def\n", ax);
+ Bprint(fout, "/ay %g def\n", ay);
+ Bprint(fout, "/rot %g def\n", rot);
+
+ for (strp = PS_setup; *strp != NULL; strp++)
+ Bwrite(fout, *strp, strlen(*strp));
+
+ copy(fin, fout, &prolog);
+ for(i = 0; i < nglobal; i++)
+ copy(fin, fout, &global[i]);
+ copy(fin, fout, &page);
+ copy(fin, fout, &trailer);
+ for (strp = PS_tail; *strp != NULL; strp++)
+ Bwrite(fout, *strp, strlen(*strp));
+
+ if(nglobal)
+ free(global);
+
+ /* force the program to reestablish its state */
+ curpostfontid = -1;
+ curfontsize = -1;
+}
