Move base64 back to pls.c

master
Curtis McEnroe 2018-12-16 16:57:43 -05:00
parent 38b4a53d57
commit ef916ddaff
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GPG Key ID: CEA2F97ADCFCD77C
6 changed files with 57 additions and 82 deletions

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@ -23,7 +23,6 @@ OBJS += input.o
OBJS += irc.o OBJS += irc.o
OBJS += log.o OBJS += log.o
OBJS += pls.o OBJS += pls.o
OBJS += string.o
OBJS += tab.o OBJS += tab.o
OBJS += tag.o OBJS += tag.o
OBJS += term.o OBJS += term.o
@ -31,7 +30,7 @@ OBJS += ui.o
OBJS += url.o OBJS += url.o
TESTS += format.t TESTS += format.t
TESTS += string.t TESTS += pls.t
TESTS += term.t TESTS += term.t
all: tags $(BINS) test all: tags $(BINS) test

1
README
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@ -31,7 +31,6 @@ FILES
edit.c line editing edit.c line editing
tab.c tab-complete tab.c tab-complete
url.c URL detection url.c URL detection
string.c base64 and rot13
pls.c functions which should not have to be written pls.c functions which should not have to be written
sandman.m utility for Darwin to signal sleep sandman.m utility for Darwin to signal sleep

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@ -66,8 +66,6 @@ line editing
tab-complete tab-complete
.It Pa url.c .It Pa url.c
URL detection URL detection
.It Pa string.c
base64 and rot13
.It Pa pls.c .It Pa pls.c
functions which should not have to be written functions which should not have to be written
.It Pa sandman.m .It Pa sandman.m

6
chat.h
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@ -190,9 +190,6 @@ void logFmt(
) __attribute__((format(printf, 3, 4))); ) __attribute__((format(printf, 3, 4)));
void logReplay(struct Tag tag); void logReplay(struct Tag tag);
size_t base64Size(size_t len);
void base64(char *dst, const byte *src, size_t len);
wchar_t *wcsnchr(const wchar_t *wcs, size_t len, wchar_t chr); wchar_t *wcsnchr(const wchar_t *wcs, size_t len, wchar_t chr);
wchar_t *wcsnrchr(const wchar_t *wcs, size_t len, wchar_t chr); wchar_t *wcsnrchr(const wchar_t *wcs, size_t len, wchar_t chr);
wchar_t *ambstowcs(const char *src); wchar_t *ambstowcs(const char *src);
@ -201,6 +198,9 @@ char *awcsntombs(const wchar_t *src, size_t nwc);
int vaswprintf(wchar_t **ret, const wchar_t *format, va_list ap); int vaswprintf(wchar_t **ret, const wchar_t *format, va_list ap);
int aswprintf(wchar_t **ret, const wchar_t *format, ...); int aswprintf(wchar_t **ret, const wchar_t *format, ...);
size_t base64Size(size_t len);
void base64(char *dst, const byte *src, size_t len);
// HACK: clang won't check wchar_t *format strings. // HACK: clang won't check wchar_t *format strings.
#ifdef NDEBUG #ifdef NDEBUG
#define uiFmt(tag, heat, format, ...) uiFmt(tag, heat, L##format, __VA_ARGS__) #define uiFmt(tag, heat, format, ...) uiFmt(tag, heat, L##format, __VA_ARGS__)

53
pls.c
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@ -131,3 +131,56 @@ int aswprintf(wchar_t **ret, const wchar_t *format, ...) {
va_end(ap); va_end(ap);
return n; return n;
} }
static const char Base64[64] = {
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
};
size_t base64Size(size_t len) {
return 1 + (len + 2) / 3 * 4;
}
void base64(char *dst, const byte *src, size_t len) {
size_t i = 0;
while (len > 2) {
dst[i++] = Base64[0x3F & (src[0] >> 2)];
dst[i++] = Base64[0x3F & (src[0] << 4 | src[1] >> 4)];
dst[i++] = Base64[0x3F & (src[1] << 2 | src[2] >> 6)];
dst[i++] = Base64[0x3F & src[2]];
src += 3;
len -= 3;
}
if (len) {
dst[i++] = Base64[0x3F & (src[0] >> 2)];
if (len > 1) {
dst[i++] = Base64[0x3F & (src[0] << 4 | src[1] >> 4)];
dst[i++] = Base64[0x3F & (src[1] << 2)];
} else {
dst[i++] = Base64[0x3F & (src[0] << 4)];
dst[i++] = '=';
}
dst[i++] = '=';
}
dst[i] = '\0';
}
#ifdef TEST
#include <assert.h>
#include <string.h>
int main() {
assert(5 == base64Size(1));
assert(5 == base64Size(2));
assert(5 == base64Size(3));
assert(9 == base64Size(4));
char b64[base64Size(3)];
assert((base64(b64, (byte *)"cat", 3), !strcmp("Y2F0", b64)));
assert((base64(b64, (byte *)"ca", 2), !strcmp("Y2E=", b64)));
assert((base64(b64, (byte *)"c", 1), !strcmp("Yw==", b64)));
assert((base64(b64, (byte *)"\xFF\x00\xFF", 3), !strcmp("/wD/", b64)));
assert((base64(b64, (byte *)"\x00\xFF\x00", 3), !strcmp("AP8A", b64)));
}
#endif

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@ -1,74 +0,0 @@
/* Copyright (C) 2018 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include "chat.h"
static const char Base64[64] = {
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
};
size_t base64Size(size_t len) {
return 1 + (len + 2) / 3 * 4;
}
void base64(char *dst, const byte *src, size_t len) {
size_t i = 0;
while (len > 2) {
dst[i++] = Base64[0x3F & (src[0] >> 2)];
dst[i++] = Base64[0x3F & (src[0] << 4 | src[1] >> 4)];
dst[i++] = Base64[0x3F & (src[1] << 2 | src[2] >> 6)];
dst[i++] = Base64[0x3F & src[2]];
src += 3;
len -= 3;
}
if (len) {
dst[i++] = Base64[0x3F & (src[0] >> 2)];
if (len > 1) {
dst[i++] = Base64[0x3F & (src[0] << 4 | src[1] >> 4)];
dst[i++] = Base64[0x3F & (src[1] << 2)];
} else {
dst[i++] = Base64[0x3F & (src[0] << 4)];
dst[i++] = '=';
}
dst[i++] = '=';
}
dst[i] = '\0';
}
#ifdef TEST
#include <assert.h>
int main() {
assert(5 == base64Size(1));
assert(5 == base64Size(2));
assert(5 == base64Size(3));
assert(9 == base64Size(4));
char b64[base64Size(3)];
assert((base64(b64, (byte *)"cat", 3), !strcmp("Y2F0", b64)));
assert((base64(b64, (byte *)"ca", 2), !strcmp("Y2E=", b64)));
assert((base64(b64, (byte *)"c", 1), !strcmp("Yw==", b64)));
assert((base64(b64, (byte *)"\xFF\x00\xFF", 3), !strcmp("/wD/", b64)));
assert((base64(b64, (byte *)"\x00\xFF\x00", 3), !strcmp("AP8A", b64)));
}
#endif