unarr-imp.h File Reference

#include "../unarr.h"
#include "allocator.h"
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <inttypes.h>

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Data Structures
struct	ar_stream_s
struct	ar_archive_s

Macros
#define	warn(...)   ar_log("!", __FILE__, __LINE__, __VA_ARGS__)
#define	log(...)   ar_log("-", __FILE__, __LINE__, __VA_ARGS__)

Typedefs
typedef void(*	ar_stream_close_fn )(void *data)
typedef size_t(*	ar_stream_read_fn )(void *data, void *buffer, size_t count)
typedef bool(*	ar_stream_seek_fn )(void *data, off64_t offset, int origin)
typedef off64_t(*	ar_stream_tell_fn )(void *data)
typedef void(*	ar_archive_close_fn )(ar_archive *ar)
typedef bool(*	ar_parse_entry_fn )(ar_archive *ar, off64_t offset)
typedef const char *(*	ar_entry_get_name_fn )(ar_archive *ar)
typedef bool(*	ar_entry_uncompress_fn )(ar_archive *ar, void *buffer, size_t count)
typedef size_t(*	ar_get_global_comment_fn )(ar_archive *ar, void *buffer, size_t count)

Functions
size_t	ar_conv_rune_to_utf8 (wchar_t rune, char *out, size_t size)
char *	ar_conv_dos_to_utf8 (const char *astr)
time64_t	ar_conv_dosdate_to_filetime (uint32_t dosdate)
uint32_t	ar_crc32 (uint32_t crc32, const unsigned char *data, size_t data_len)
ar_stream *	ar_open_stream (void *data, ar_stream_close_fn close, ar_stream_read_fn read, ar_stream_seek_fn seek, ar_stream_tell_fn tell)
void	ar_log (const char *prefix, const char *file, int line, const char *msg,...)
ar_archive *	ar_open_archive (ar_stream *stream, size_t struct_size, ar_archive_close_fn close, ar_parse_entry_fn parse_entry, ar_entry_get_name_fn get_name, ar_entry_uncompress_fn uncompress, ar_get_global_comment_fn get_comment, off64_t first_entry_offset)

Macro Definition Documentation

#define log

(

...)

ar_log("-", __FILE__, __LINE__, __VA_ARGS__)

Definition at line 49 of file unarr-imp.h.

#define warn

(

...)

ar_log("!", __FILE__, __LINE__, __VA_ARGS__)

Definition at line 47 of file unarr-imp.h.

Typedef Documentation

typedef void(* ar_archive_close_fn)(ar_archive *ar)

Definition at line 55 of file unarr-imp.h.

typedef const char*(* ar_entry_get_name_fn)(ar_archive *ar)

Definition at line 57 of file unarr-imp.h.

typedef bool(* ar_entry_uncompress_fn)(ar_archive *ar, void *buffer, size_t count)

Definition at line 58 of file unarr-imp.h.

typedef size_t(* ar_get_global_comment_fn)(ar_archive *ar, void *buffer, size_t count)

Definition at line 59 of file unarr-imp.h.

typedef bool(* ar_parse_entry_fn)(ar_archive *ar, off64_t offset)

Definition at line 56 of file unarr-imp.h.

typedef void(* ar_stream_close_fn)(void *data)

Definition at line 30 of file unarr-imp.h.

typedef size_t(* ar_stream_read_fn)(void *data, void *buffer, size_t count)

Definition at line 31 of file unarr-imp.h.

typedef bool(* ar_stream_seek_fn)(void *data, off64_t offset, int origin)

Definition at line 32 of file unarr-imp.h.

typedef off64_t(* ar_stream_tell_fn)(void *data)

Definition at line 33 of file unarr-imp.h.

Function Documentation

char* ar_conv_dos_to_utf8

(

const char *

astr)

Definition at line 53 of file conv.c.

{
    char *str, *out;
    const char *in;
    size_t size;

    size = 0;
    for (in = astr; *in; in++) {
        char buf[4];
        size += ar_conv_rune_to_utf8(gCp437[(uint8_t)*in], buf, sizeof(buf));
    }

    if (size == (size_t)-1)
        return NULL;
    str = malloc(size + 1);
    if (!str)
        return NULL;

    for (in = astr, out = str; *in; in++) {
        out += ar_conv_rune_to_utf8(gCp437[(uint8_t)*in], out, str + size - out);
    }
    *out = '\0';

    return str;
}

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time64_t ar_conv_dosdate_to_filetime

(

uint32_t

dosdate)

Definition at line 79 of file conv.c.

{
    struct tm tm;
    time_t t1, t2;

    tm.tm_sec = (dosdate & 0x1F) * 2;
    tm.tm_min = (dosdate >> 5) & 0x3F;
    tm.tm_hour = (dosdate >> 11) & 0x1F;
    tm.tm_mday = (dosdate >> 16) & 0x1F;
    tm.tm_mon = ((dosdate >> 21) & 0x0F) - 1;
    tm.tm_year = ((dosdate >> 25) & 0x7F) + 80;
    tm.tm_isdst = -1;

    t1 = mktime(&tm);
    t2 = mktime(gmtime(&t1));

    return (time64_t)(2 * t1 - t2 + 11644473600) * 10000000;
}

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size_t ar_conv_rune_to_utf8	(	wchar_t	rune,
		char *	out,
		size_t	size
	)

Definition at line 28 of file conv.c.

{
    if (size < 1)
        return 0;
    if (rune < 0x0080) {
        *out++ = rune & 0x7F;
        return 1;
    }
    if (rune < 0x0800 && size >= 2) {
        *out++ = 0xC0 | ((rune >> 6) & 0x1F);
        *out++ = 0x80 | (rune & 0x3F);
        return 2;
    }
    if (size >= 3) {
        if ((0xD800 <= rune && rune <= 0xDFFF) || rune >= 0x10000)
            rune = 0xFFFD;
        *out++ = 0xE0 | ((rune >> 12) & 0x0F);
        *out++ = 0x80 | ((rune >> 6) & 0x3F);
        *out++ = 0x80 | (rune & 0x3F);
        return 3;
    }
    *out++ = '?';
    return 1;
}

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uint32_t ar_crc32	(	uint32_t	crc32,
		const unsigned char *	data,
		size_t	data_len
	)

Definition at line 13 of file crc32.c.

{
    if (!crc_table_ready) {
        uint32_t i, j;
        uint32_t h = 1;
        crc_table[0] = 0;
        for (i = 128; i; i >>= 1) {
            h = (h >> 1) ^ ((h & 1) ? 0xEDB88320 : 0);
            for (j = 0; j < 256; j += 2 * i) {
                crc_table[i + j] = crc_table[j] ^ h;
            }
        }
        crc_table_ready = true;
    }

    crc32 = crc32 ^ 0xFFFFFFFF;
    while (data_len-- > 0) {
        crc32 = (crc32 >> 8) ^ crc_table[(crc32 ^ *data++) & 0xFF];
    }
    return crc32 ^ 0xFFFFFFFF;
}

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void ar_log	(	const char *	prefix,
		const char *	file,
		int	line,
		const char *	msg,
			...
	)

Definition at line 95 of file unarr.c.

{
    va_list args;
    va_start(args, msg);
    if (prefix)
        fprintf(stderr, "%s ", prefix);
    if (strrchr(file, '/'))
        file = strrchr(file, '/') + 1;
    if (strrchr(file, '\\'))
        file = strrchr(file, '\\') + 1;
    fprintf(stderr, "%s:%d: ", file, line);
    vfprintf(stderr, msg, args);
    fprintf(stderr, "\n");
    va_end(args);
}

ar_archive* ar_open_archive	(	ar_stream *	stream,
		size_t	struct_size,
		ar_archive_close_fn	close,
		ar_parse_entry_fn	parse_entry,
		ar_entry_get_name_fn	get_name,
		ar_entry_uncompress_fn	uncompress,
		ar_get_global_comment_fn	get_comment,
		off64_t	first_entry_offset
	)

Definition at line 6 of file unarr.c.

{
    ar_archive *ar = malloc(struct_size);
    if (!ar)
        return NULL;
    memset(ar, 0, struct_size);
    ar->close = close;
    ar->parse_entry = parse_entry;
    ar->get_name = get_name;
    ar->uncompress = uncompress;
    ar->get_comment = get_comment;
    ar->stream = stream;
    ar->entry_offset_first = first_entry_offset;
    ar->entry_offset_next = first_entry_offset;
    return ar;
}

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ar_stream* ar_open_stream	(	void *	data,
		ar_stream_close_fn	close,
		ar_stream_read_fn	read,
		ar_stream_seek_fn	seek,
		ar_stream_tell_fn	tell
	)

Definition at line 6 of file stream.c.

{
    ar_stream *stream = malloc(sizeof(ar_stream));
    if (!stream) {
        close(data);
        return NULL;
    }
    stream->data = data;
    stream->close = close;
    stream->read = read;
    stream->seek = seek;
    stream->tell = tell;
    return stream;
}

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