ref: 1d4c0e6324ea5e0f8baf9ee591582d41ab24e587
parent: e02a200628b9f7e0b2a98d6d051e4a7610ecc739
author: Ali Gholami Rudi <ali@rudi.ir>
date: Mon Apr 2 15:56:34 EDT 2018
pdf: optimize encoding hex streams
--- a/pdf.c
+++ b/pdf.c
@@ -47,7 +47,7 @@
static struct psfont *psfonts;
static int psfonts_n, psfonts_sz;
-/* print pdf output */
+/* print formatted pdf output */
static void pdfout(char *s, ...)
{va_list ap;
@@ -56,6 +56,13 @@
va_end(ap);
}
+/* print pdf output */
+static void pdfouts(char *s)
+{+ fputs(s, stdout);
+ pdf_pos += strlen(s);
+}
+
/* allocate an object number */
static int obj_map(void)
{@@ -117,6 +124,19 @@
return '1';
}
+static void encodehex(struct sbuf *d, char *s, int n)
+{+ static char hex[] = "0123456789ABCDEF";
+ int i;
+ for (i = 0; i < n; i++) {+ sbuf_chr(d, hex[((unsigned char) s[i]) >> 4]);
+ sbuf_chr(d, hex[((unsigned char) s[i]) & 0x0f]);
+ if (i % 80 == 79 && i + 1 < n)
+ sbuf_chr(d, '\n');
+ }
+ sbuf_str(d, ">\n");
+}
+
/* include font descriptor; returns object id */
static int psfont_writedesc(struct psfont *ps)
{@@ -123,7 +143,6 @@
int str_obj = -1;
int des_obj;
char buf[1 << 10];
- int i;
if (fonttype(ps->path) == '1' || fonttype(ps->path) == 't') {int fd = open(ps->path, O_RDONLY);
struct sbuf *ffsb = sbuf_make();
@@ -146,12 +165,7 @@
l1 -= l3;
}
/* encoding file contents */
- for (i = 0; i < sbuf_len(ffsb); i++) {- sbuf_printf(sb, "%02x", (unsigned char) sbuf_buf(ffsb)[i]);
- if (i % 40 == 39 && i + 1 < sbuf_len(ffsb))
- sbuf_chr(sb, '\n');
- }
- sbuf_str(sb, ">\n");
+ encodehex(sb, sbuf_buf(ffsb), sbuf_len(ffsb));
/* write font data if it has nonzero length */
if (l1) {str_obj = obj_beg(0);
@@ -165,7 +179,7 @@
pdfout(" /Length3 %d\n", l3); pdfout(">>\n"); pdfout("stream\n");- pdfout("%s", sbuf_buf(sb));+ pdfouts(sbuf_buf(sb));
pdfout("endstream\n");obj_end();
}
@@ -664,7 +678,7 @@
pdfout(" /Length %d\n", sbuf_len(pg)); pdfout(">>\n"); pdfout("stream\n");- pdfout("%s", sbuf_buf(pg));+ pdfouts(sbuf_buf(pg));
pdfout("endstream\n");obj_end();
/* the page object */