GopherProxy

	added missing urlencode, thanks sl for checking this - 9base - revived minimali…
	git clone git://git.suckless.org/9base
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	---
	commit 51cdf1141edd627428ecf0b8bd643142dd5c3773
	parent 19a07111123964b50fff2644882430398fded904
	Author: [email protected] <unknown>
	Date: Thu, 1 Nov 2012 18:42:41 +0100

	added missing urlencode, thanks sl for checking this
	Diffstat:
	A urlencode/Makefile \| 10 ++++++++++
	A urlencode/urlencode.1 \| 20 ++++++++++++++++++++
	A urlencode/urlencode.c \| 103 +++++++++++++++++++++++++++++…

	3 files changed, 133 insertions(+), 0 deletions(-)
	---
	diff --git a/urlencode/Makefile b/urlencode/Makefile
	@@ -0,0 +1,10 @@
	+# urlencode - url encode and decode files
	+# Depends on ../lib9
	+
	+TARG = urlencode
	+
	+include ../std.mk
	+
	+pre-uninstall:
	+
	+post-install:
	diff --git a/urlencode/urlencode.1 b/urlencode/urlencode.1
	@@ -0,0 +1,20 @@
	+.TH URLENCODE 1
	+.SH NAME
	+urlencode \- URL encode and decode files
	+.SH SYNOPSIS
	+.B urlencode
	+[
	+.B -d
	+] [
	+.I file
	+]
	+.SH DESCRIPTION
	+.I Urlencode
	+is a helper program to URL encode and decode files. The
	+.B -d
	+flag insead of encoding, decodes URL encoded file. If no
	+.I file
	+is given, standard input is read. The resulting data
	+is written to standard output.
	+.SH SOURCE
	+.B \*9/src/urlencode/urlencode.c
	diff --git a/urlencode/urlencode.c b/urlencode/urlencode.c
	@@ -0,0 +1,103 @@
	+#include <u.h>
	+#include <libc.h>
	+#include <bio.h>
	+
	+Biobuf bin;
	+Biobuf bout;
	+int dflag;
	+
	+char hex[] = "0123456789abcdef";
	+char Hex[] = "0123456789ABCDEF";
	+
	+int
	+hexdigit(int c)
	+{
	+ char *p;
	+
	+ if(c > 0){
	+ if((p = strchr(Hex, c)) != 0)
	+ return p - Hex;
	+ if((p = strchr(hex, c)) != 0)
	+ return p - hex;
	+ }
	+ return -1;
	+}
	+
	+void
	+usage(void)
	+{
	+ fprint(2, "Usage: %s [ -d ] [ file ]\n", argv0);
	+ exits("usage");
	+}
	+
	+void
	+main(int argc, char *argv[])
	+{
	+ int c;
	+
	+ ARGBEGIN {
	+ case 'd':
	+ dflag = 1;
	+ break;
	+ default:
	+ usage();
	+ } ARGEND;
	+
	+ if(argc == 1){
	+ int fd;
	+
	+ fd = open(*argv, OREAD);
	+ if(fd < 0)
	+ sysfatal("%r");
	+ if(fd != 0) dup(fd, 0);
	+ } else if(argc > 1)
	+ usage();
	+
	+ Binit(&bin, 0, OREAD);
	+ Binit(&bout, 1, OWRITE);
	+
	+ if(dflag){
	+ while((c = Bgetc(&bin)) >= 0){
	+ if(c == '%'){
	+ int c1, c2, x1, x2;
	+
	+ if((c1 = Bgetc(&bin)) < 0)
	+ break;
	+ if((x1 = hexdigit(c1)) < 0){
	+ Bungetc(&bin);
	+ Bputc(&bout, c);
	+ continue;
	+ }
	+ if((c2 = Bgetc(&bin)) < 0)
	+ break;
	+ if((x2 = hexdigit(c2)) < 0){
	+ Bungetc(&bin);
	+ Bputc(&bout, c);
	+ Bputc(&bout, c1);
	+ continue;
	+ }
	+ c = x1<<4 \| x2;
	+ } else if(c == '+')
	+ c = ' ';
	+ Bputc(&bout, c);
	+ }
	+ } else {
	+ while((c = Bgetc(&bin)) >= 0){
	+ if(c>0 && strchr("/$-_@.!*'(),", c)
	+ \|\| 'a'<=c && c<='z'
	+ \|\| 'A'<=c && c<='Z'
	+ \|\| '0'<=c && c<='9')
	+ Bputc(&bout, c);
	+ else if(c == ' ')
	+ Bputc(&bout, '+');
	+ else {
	+ Bputc(&bout, '%');
	+ Bputc(&bout, Hex[c>>4]);
	+ Bputc(&bout, Hex[c&15]);
	+ }
	+ }
	+ }
	+
	+ Bflush(&bout);
	+ exits(0);
	+}