From 0acfd93d7d7f277618cfa9af34f7587878f51064 Mon Sep 17 00:00:00 2001 From: User Erdgeist Date: Tue, 25 Feb 2014 04:30:29 +0100 Subject: Massively speed up dump by buffering output before write() --- src/export/extract_version_1.c | 85 +++++++++++++++++++++++++++--------------- 1 file changed, 55 insertions(+), 30 deletions(-) (limited to 'src/export') diff --git a/src/export/extract_version_1.c b/src/export/extract_version_1.c index dc006e5..8ab3190 100644 --- a/src/export/extract_version_1.c +++ b/src/export/extract_version_1.c @@ -9,7 +9,7 @@ #include "mystdlib.h" static uint8_t xlat_table[] = { - 0x00, 0x09, 0x02, 0x03, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, + 0x00, 0x0a, 0x02, 0x03, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5f, @@ -37,13 +37,17 @@ static uint8_t cp437_to_iso8859_1_table[] = { }; static struct { - int outfiles[15]; - char * vorwahl; - char * ort; - char * zip; + int outfiles[15]; + uint8_t *outbuf[15]; + size_t outfill[15]; + char * vorwahl; + char ort[1024]; + size_t ort_len; + char zip[32]; + size_t zip_len; } g_state; -static void decode_7bit_string( uint8_t const *source, uint8_t *dest ) +static uint8_t * decode_7bit_string( uint8_t const *source, uint8_t *dest ) { uint16_t acc = 0, acc_bits = 0; while( 1 ) @@ -51,7 +55,7 @@ static void decode_7bit_string( uint8_t const *source, uint8_t *dest ) acc = acc*256+*(source++); ++acc_bits; again: *(dest++) = xlat_table[ 0x7f & ( acc >> acc_bits ) ]; - if( !dest[-1] ) return; + if( !dest[-1] ) return dest - 1; if( acc_bits == 7 ) { acc_bits = 0; goto again; } } } @@ -64,28 +68,33 @@ static void split_to_files( uint8_t *entries, int num_entries ) for( entry = 0; entry < num_entries; ++entry ) { /* mimic flags from telefonbuch v3 */ - write( g_state.outfiles[0], entry ? "02\n" : ( num_entries > 1 ? "01\n" : "00\n" ), 3 ); - dprintf( g_state.outfiles[12], "%s\n", g_state.ort ); - /* Only part of zip code, Zustellpostamt or eastern German code in column 5 (06_unknown) */ - dprintf( g_state.outfiles[13], "%s\n", g_state.zip ); + memcpy( g_state.outbuf[0 ] + g_state.outfill[0 ], entry ? "02\n" : ( num_entries > 1 ? "01\n" : "00\n" ), 3 ); g_state.outfill[0] += 3; + memcpy( g_state.outbuf[12] + g_state.outfill[12], g_state.ort, g_state.ort_len ); g_state.outfill[12] += g_state.ort_len; + memcpy( g_state.outbuf[13] + g_state.outfill[13], g_state.zip, g_state.zip_len ); g_state.outfill[13] += g_state.zip_len; for( column = 0; column < 11; ++column ) { - char * end = strchr( e, '\t' ); - if( end ) { - *end = '\n'; - if( column == 9 && *e >= '0' && *e <= '9' ) write( g_state.outfiles[column+1], "0", 1 ); /* Augment Vorwahl */ - write( g_state.outfiles[column+1], e, (size_t)(end - e + 1) ); - e = end + 1; - } else - dprintf( g_state.outfiles[column+1], "%s\n", e); + char * end = strchr( e, '\n' ); + if( !end ) { + fprintf( stderr, "Unexpected end of line in city: %s", g_state.ort ); + /* fprintf( stderr, "Failing String, (%d of %d entries, column %d): ###%s\n", entry, num_entries, column, entries ); */ + if( column ) for( ; column < 11; ++column) { + memcpy( g_state.outbuf[column+1] + g_state.outfill[column+1], "#\n", 2 ); + g_state.outfill[column+1] += 2; + } + return; + } + + if( column == 9 && *e >= '0' && *e <= '9' ) *--e = '0'; /* Augment Vorwahl */ + memcpy( g_state.outbuf[column+1] + g_state.outfill[column+1], e, (size_t)(++end - e) ); g_state.outfill[column+1] += end - e; + e = end; } } } static void act_on_record( uint8_t *file, int flag, uint8_t *page, uint16_t record_off ) { - uint8_t outbuf[8192], *out_dest = outbuf, *record; + uint8_t outbuf[8192*4], *out_dest = outbuf, *record; int num_entries; if( record_off > 0x1fff ) @@ -112,7 +121,8 @@ static void act_on_record( uint8_t *file, int flag, uint8_t *page, uint16_t reco record += 2; } - decode_7bit_string( record, out_dest ); + record = decode_7bit_string( record, out_dest ); + *record++ = '\n'; *record = 0; split_to_files( outbuf, num_entries ); } @@ -134,24 +144,28 @@ static void act_on_page( uint8_t *file, uint8_t *page, int page_nr ) static void act_on_file( uint8_t *file ) { - int page, num_pages = *(uint16_t*)(file+0x40); + int i, page, num_pages = *(uint16_t*)(file+0x40); uint32_t num_records= *(uint32_t*)(file+0x42); char *gasse = (char *)file + 0x8e; char *ort = gasse + 1 + strlen(gasse); char *zip = ort + 1 + strlen(ort); char *vorwahl = zip + 1 + strlen(zip); - char ort_conv[1024]; int i; - for(i=0; ort[i]; ++i ) ort_conv[i] = (char)cp437_to_iso8859_1_table[((uint8_t*)ort)[i]]; ort_conv[i] = 0; - /* printf( "Working on a %04d page and %06d records file, city: %4s %-32s with prefix %s\n", num_pages, num_records, zip, ort_conv, vorwahl ); */ - (void)num_records; /* silence warning about unused variable */ + for(i=0; ort[i]; ++i ) + g_state.ort[i] = (char)cp437_to_iso8859_1_table[((uint8_t*)ort)[i]]; + g_state.ort[i++] = '\n'; + g_state.ort[i] = 0; + g_state.ort_len = i; - g_state.ort = ort_conv; - g_state.zip = zip; + g_state.zip_len = snprintf( g_state.zip, sizeof(g_state.zip), "%s\n", zip ); g_state.vorwahl = vorwahl; + /* printf( "Working on a %04d page and %06d records file, city: %4s %-32s with prefix %s\n", num_pages, num_records, zip, ort, vorwahl ); */ + (void)num_records; /* silence warning about unused variable */ + for( page = 0; page < num_pages; ++page ) act_on_page( file, file + 0x800 + 0x2000 * page, page ); + } int main( ) @@ -164,6 +178,8 @@ int main( ) { sprintf( filename, "%02d_unknown", i+1 ); g_state.outfiles[i] = open( filename, O_WRONLY | O_APPEND | O_CREAT, 0644 ); + g_state.outbuf[i] = malloc(8192*4096); + g_state.outfill[i] = 0; } while( fgets( filename, sizeof(filename), stdin ) ) { @@ -172,10 +188,19 @@ int main( ) act_on_file( f->addr ); unmap_file( &f ); + + /* Write out results */ + for( i=0; i<14; ++i ) { + /* if( g_state.outfill[i] > 1024*1024*6 ) printf( "Large: %s %zd\n", g_state.ort, g_state.outfill[i] ); */ + write( g_state.outfiles[i], g_state.outbuf[i], g_state.outfill[i] ); + g_state.outfill[i] = 0; + } } - for( i=0; i<14; ++i ) - close( g_state.outfiles[i] ); + for( i=0; i<14; ++i ) { + write( g_state.outfiles[i], g_state.outbuf[i], g_state.outfill[i] ); + close( g_state.outfiles[i] ); + } return 0; } -- cgit v1.2.3