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Moved examples around. Updated (and corrected) const initialization. Removed "in" keyword. Added "member" attribute domain. Many fixes in struct padding and alignment and tests. Fixed extern global.

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This commit is contained in:
Christoffer Lerno
2021-01-24 00:52:48 +01:00
committed by Christoffer Lerno
parent 564c93700e
commit 3a24fbfa6d
67 changed files with 1930 additions and 671 deletions
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102
resources/examples/base64.c3
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@@ -1,7 +1,13 @@
module base64;
// Based on the C2 version.
const char[] LUT_ENC = {
error InvalidCharacter
{
int index;
char c;
}
const char[64] LUT_ENC = {
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
@@ -14,27 +20,22 @@ const char[] LUT_ENC = {
const byte ERR = 0xFF;
const byte[256] LUT_DEC = {
// '+', ',', '-', '.', '/', '0', '1', '2'
62, ERR, ERR, ERR, 63, 52, 53, 54,
// '3', '4', '5', '6', '7', '8', '9', ':'
55, 56, 57, 58, 59, 60, 61, ERR,
// ';', '<', '=', '>', '?', '@', 'A', 'B'
ERR, ERR, ERR, ERR, ERR, ERR, 0, 1,
// 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J'
2, 3, 4, 5, 6, 7, 8, 9,
// 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R'
10, 11, 12, 13, 14, 15, 16, 17,
// 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'
18, 19, 20, 21, 22, 23, 24, 25,
// '[', '\', ']', '^', '_', '`', 'a', 'b'
ERR, ERR, ERR, ERR, ERR, ERR, 26, 27,
// 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j'
28, 29, 30, 31, 32, 33, 34, 35,
// 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r'
36, 37, 38, 39, 40, 41, 42, 43,
// 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'
44, 45, 46, 47, 48, 49, 50, 51,
const byte[256] LUT_DEC =
{
[0..255] = ERR,
['A'] = 0, ['B'] = 1, ['C'] = 2, ['D'] = 3, ['E'] = 4,
['F'] = 5, ['G'] = 6, ['H'] = 7, ['I'] = 8, ['J'] = 9,
['K'] = 10, ['L'] = 11, ['M'] = 12, ['N'] = 13, ['O'] = 14,
['P'] = 15, ['Q'] = 16, ['R'] = 17, ['S'] = 18, ['T'] = 19,
['U'] = 20, ['V'] = 21, ['W'] = 22, ['X'] = 23, ['Y'] = 24,
['Z'] = 25, ['a'] = 26, ['b'] = 27, ['c'] = 28, ['d'] = 29,
['e'] = 30, ['f'] = 31, ['g'] = 32, ['h'] = 33, ['i'] = 34,
['j'] = 35, ['k'] = 36, ['l'] = 37, ['m'] = 38, ['n'] = 39,
['o'] = 40, ['p'] = 41, ['q'] = 42, ['r'] = 43, ['s'] = 44,
['t'] = 45, ['u'] = 46, ['v'] = 47, ['w'] = 48, ['x'] = 49,
['y'] = 50, ['z'] = 51, ['0'] = 52, ['1'] = 53, ['2'] = 54,
['3'] = 55, ['4'] = 56, ['5'] = 57, ['6'] = 58, ['7'] = 59,
['8'] = 60, ['9'] = 61, ['+'] = 62, ['/'] = 63
};
@@ -42,33 +43,26 @@ const char PAD = '=';
const char FIRST = '+';
const char LAST = 'z';
public error Base64Error
{
INVALID_CHARACTER
}
public func void encode(byte[] in, string *out)
public func void encode(byte[] in, char *out)
{
int j = 0;
for (int i = 0; i < in.len; i++);
char c = LUT_ENC[1];
for (int i = 0; i < in.len(); i++)
{
switch (i % 3)
{
case 0:
out[j++] = LUT_ENC[(in[i] >> 2) & 0x3F];
case 1:
out[j++] = LUT_ENC[(in[i-1] & 0x3) << 4 + ((in[i] >> 4) & 0xF)];
out[j++] = LUT_ENC[(in[i - 1] & 0x3) << 4 + ((in[i] >> 4) & 0xF)];
case 2:
out[j++] = LUT_ENC[(in[i-1] & 0xF) << 2 + ((in[i] >> 6) & 0x3)];
out[j++] = LUT_ENC[(in[i - 1] & 0xF) << 2 + ((in[i] >> 6) & 0x3)];
out[j++] = LUT_ENC[in[i] & 0x3F];
}
i++;
}
// move back
int last = in.len - 1;
usize last = in.len() - 1;
// check the last and add padding
switch (last % 3)
{
@@ -82,46 +76,54 @@ public func void encode(byte[] in, string *out)
}
}
error InvalidCharacter
{
int index;
char c;
}
public func int! decode(string in, byte[] out)
public func int! decode(char[] in, byte* out)
{
int j = 0;
for (int i = 0; i < len; i++)
for (int i = 0; i < in.len(); i++)
{
char value = in[i];
if (value == PAD) return j;
if (value < FIRST || in[i] > LAST) return! InvalidCharacter(i, value);
byte c = LUT_DEC[in[i] - FIRST);
if (c == ERR) return! InvalidCharacter(i, value);
byte c = LUT_DEC[in[i]];
if (c == ERR) return InvalidCharacter({i, value})!;
switch (i % 4)
{
case 0:
out[j] = c << 2;
case 1:
out[j++] += (c >> 4) & 0x3;
out[j++] += c >> 4 & 0x3;
// if not last char with padding
if (i < (len - 3) || in[len - 2] != PAD)
if (i < (in.len() - 3) || in[cast(in.len() as long) - 2] != PAD)
{
out[j] = (c & 0xF) << 4;
}
case 2:
out[j++] += (c >> 2) & 0xF;
if (i < (len -2) || in[len -1] != PAD)
out[j++] += c >> 2 & 0xF;
if (i < (in.len() - 2) || in[cast(in.len() as long) - 1] != PAD)
{
out[j] = (c & 0x3) << 6;
}
case 3:
out[j++] += c;
}
}
return j;
}
extern func void printf(char *fmt, ...);
public func void main()
{
printf("Startin...\n");
char *helloworld = "Hello World\n";
char[1000] buffer;
encode(cast(helloworld as byte*)[0..12], &buffer);
printf("Printres\n");
printf("Result: %s\n", &buffer);
char *to_decode = "aGVsbG8gd29ybGRcMA==";
decode(to_decode[0..19], cast(&buffer as byte*));
printf("2Result: %s\n", &buffer);
}