1 files changed, 504 insertions, 0 deletions

diff --git a/ruby_1_8_5/ext/syck/syck.c b/ruby_1_8_5/ext/syck/syck.c
new file mode 100644
index 0000000000..ac5427bc1b
--- /dev/null
+++ b/ruby_1_8_5/ext/syck/syck.c
@@ -0,0 +1,504 @@
+/*
+ * syck.c
+ *
+ * $Author: matz $
+ * $Date: 2006/08/07 08:09:34 $
+ *
+ * Copyright (C) 2003 why the lucky stiff
+ */
+#include "ruby.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "syck.h"
+
+void syck_parser_pop_level( SyckParser * );
+
+/*
+ * Custom assert
+ */
+void 
+syck_assert( char *file_name, unsigned line_num )
+{
+    fflush( NULL );
+    fprintf( stderr, "\nAssertion failed: %s, line %u\n",
+             file_name, line_num );
+    fflush( stderr );
+    abort();
+}
+
+/*
+ * Allocates and copies a string
+ */
+char *
+syck_strndup( char *buf, long len )
+{
+    char *new = S_ALLOC_N( char, len + 1 );
+    S_MEMZERO( new, char, len + 1 );
+    S_MEMCPY( new, buf, char, len );
+    return new;
+}
+
+/*
+ * Default FILE IO function
+ */
+long
+syck_io_file_read( char *buf, SyckIoFile *file, long max_size, long skip )
+{
+    long len = 0;
+
+    ASSERT( file != NULL );
+
+    max_size -= skip;
+    len = fread( buf + skip, sizeof( char ), max_size, file->ptr );
+    len += skip;
+    buf[len] = '\0';
+
+    return len;
+}
+
+/*
+ * Default string IO function
+ */
+long
+syck_io_str_read( char *buf, SyckIoStr *str, long max_size, long skip )
+{
+    char *beg;
+    long len = 0;
+
+    ASSERT( str != NULL );
+    beg = str->ptr;
+    if ( max_size >= 0 )
+    {
+        max_size -= skip;
+        if ( max_size <= 0 )  max_size = 0;
+        else                  str->ptr += max_size;
+
+        if ( str->ptr > str->end )
+        {
+            str->ptr = str->end;
+        }
+    }
+    else
+    {
+        /* Use exact string length */
+        while ( str->ptr < str->end ) {
+            if (*(str->ptr++) == '\n') break;
+        }
+    }
+    if ( beg < str->ptr )
+    {
+        len = ( str->ptr - beg );
+        S_MEMCPY( buf + skip, beg, char, len );
+    }
+    len += skip;
+    buf[len] = '\0';
+
+    return len;
+}
+
+void
+syck_parser_reset_levels( SyckParser *p )
+{
+    while ( p->lvl_idx > 1 )
+    {
+        syck_parser_pop_level( p );
+    }
+
+    if ( p->lvl_idx < 1 )
+    {
+        p->lvl_idx = 1;
+        p->levels[0].spaces = -1;
+        p->levels[0].ncount = 0;
+        p->levels[0].domain = syck_strndup( "", 0 );
+    }
+    p->levels[0].status = syck_lvl_header;
+}
+
+void
+syck_parser_reset_cursor( SyckParser *p )
+{
+    if ( p->buffer == NULL )
+    {
+        p->buffer = S_ALLOC_N( char, p->bufsize );
+        S_MEMZERO( p->buffer, char, p->bufsize );
+    }
+    p->buffer[0] = '\0';
+
+    p->cursor = NULL;
+    p->lineptr = NULL;
+    p->linectptr = NULL;
+    p->token = NULL;
+    p->toktmp = NULL;
+    p->marker = NULL;
+    p->limit = NULL;
+
+    p->root = 0;
+    p->root_on_error = 0;
+    p->linect = 0;
+    p->eof = 0;
+    p->last_token = 0;
+    p->force_token = 0;
+}
+
+/*
+ * Value to return on a parse error
+ */
+void
+syck_parser_set_root_on_error( SyckParser *p, SYMID roer )
+{
+    p->root_on_error = roer;
+}
+
+/*
+ * Allocate the parser
+ */
+SyckParser *
+syck_new_parser()
+{
+    SyckParser *p;
+    p = S_ALLOC( SyckParser );
+    S_MEMZERO( p, SyckParser, 1 );
+    p->lvl_capa = ALLOC_CT;
+    p->levels = S_ALLOC_N( SyckLevel, p->lvl_capa ); 
+    p->input_type = syck_yaml_utf8;
+    p->io_type = syck_io_str;
+    p->io.str = NULL;
+    p->syms = NULL;
+    p->anchors = NULL;
+    p->bad_anchors = NULL;
+    p->implicit_typing = 1;
+    p->taguri_expansion = 0;
+    p->bufsize = SYCK_BUFFERSIZE;
+    p->buffer = NULL;
+    p->lvl_idx = 0;
+    syck_parser_reset_levels( p );
+    return p;
+}
+
+int
+syck_add_sym( SyckParser *p, char *data )
+{
+    SYMID id = 0;
+    if ( p->syms == NULL )
+    {
+        p->syms = st_init_numtable();
+    }
+    id = p->syms->num_entries + 1;
+    st_insert( p->syms, id, (st_data_t)data );
+    return id;
+}
+
+int
+syck_lookup_sym( SyckParser *p, SYMID id, char **data )
+{
+    if ( p->syms == NULL ) return 0;
+    return st_lookup( p->syms, id, (st_data_t *)data );
+}
+
+int
+syck_st_free_nodes( char *key, SyckNode *n, char *arg )
+{
+    if ( n != (void *)1 ) syck_free_node( n );
+    n = NULL;
+    return ST_CONTINUE;
+}
+
+void
+syck_st_free( SyckParser *p )
+{
+    /*
+     * Free the anchor tables
+     */
+    if ( p->anchors != NULL )
+    {
+        st_foreach( p->anchors, syck_st_free_nodes, 0 );
+        st_free_table( p->anchors );
+        p->anchors = NULL;
+    }
+
+    if ( p->bad_anchors != NULL )
+    {
+        st_foreach( p->bad_anchors, syck_st_free_nodes, 0 );
+        st_free_table( p->bad_anchors );
+        p->bad_anchors = NULL;
+    }
+}
+
+void
+syck_free_parser( SyckParser *p )
+{
+    /*
+     * Free the adhoc symbol table
+     */
+    if ( p->syms != NULL )
+    {
+        st_free_table( p->syms );
+        p->syms = NULL;
+    }
+
+    /*
+     * Free tables, levels
+     */
+    syck_st_free( p );
+    syck_parser_reset_levels( p );
+    S_FREE( p->levels[0].domain );
+    S_FREE( p->levels );
+
+    if ( p->buffer != NULL )
+    {
+        S_FREE( p->buffer );
+    }
+    free_any_io( p );
+    S_FREE( p );
+}
+
+void
+syck_parser_handler( SyckParser *p, SyckNodeHandler hdlr )
+{
+    ASSERT( p != NULL );
+    p->handler = hdlr;
+}
+
+void
+syck_parser_implicit_typing( SyckParser *p, int flag )
+{
+    p->implicit_typing = ( flag == 0 ? 0 : 1 );
+}
+
+void
+syck_parser_taguri_expansion( SyckParser *p, int flag )
+{
+    p->taguri_expansion = ( flag == 0 ? 0 : 1 );
+}
+
+void
+syck_parser_error_handler( SyckParser *p, SyckErrorHandler hdlr )
+{
+    ASSERT( p != NULL );
+    p->error_handler = hdlr;
+}
+
+void
+syck_parser_bad_anchor_handler( SyckParser *p, SyckBadAnchorHandler hdlr )
+{
+    ASSERT( p != NULL );
+    p->bad_anchor_handler = hdlr;
+}
+
+void
+syck_parser_set_input_type( SyckParser *p, enum syck_parser_input input_type )
+{
+    ASSERT( p != NULL );
+    p->input_type = input_type;
+}
+
+void
+syck_parser_file( SyckParser *p, FILE *fp, SyckIoFileRead read )
+{
+    ASSERT( p != NULL );
+    free_any_io( p );
+	syck_parser_reset_cursor( p );
+    p->io_type = syck_io_file;
+    p->io.file = S_ALLOC( SyckIoFile );
+    p->io.file->ptr = fp;
+    if ( read != NULL )
+    {
+        p->io.file->read = read;
+    }
+    else
+    {
+        p->io.file->read = syck_io_file_read;
+    }
+}
+
+void
+syck_parser_str( SyckParser *p, char *ptr, long len, SyckIoStrRead read )
+{
+    ASSERT( p != NULL );
+    free_any_io( p );
+	syck_parser_reset_cursor( p );
+    p->io_type = syck_io_str;
+    p->io.str = S_ALLOC( SyckIoStr );
+    p->io.str->beg = ptr;
+    p->io.str->ptr = ptr;
+    p->io.str->end = ptr + len;
+    if ( read != NULL )
+    {
+        p->io.str->read = read;
+    }
+    else
+    {
+        p->io.str->read = syck_io_str_read;
+    }
+}
+
+void
+syck_parser_str_auto( SyckParser *p, char *ptr, SyckIoStrRead read )
+{
+    syck_parser_str( p, ptr, strlen( ptr ), read );
+}
+
+SyckLevel *
+syck_parser_current_level( SyckParser *p )
+{
+    return &p->levels[p->lvl_idx-1];
+}
+
+void
+syck_parser_pop_level( SyckParser *p )
+{
+    ASSERT( p != NULL );
+
+    /* The root level should never be popped */
+    if ( p->lvl_idx <= 1 ) return;
+
+    p->lvl_idx -= 1;
+    free( p->levels[p->lvl_idx].domain );
+}
+
+void 
+syck_parser_add_level( SyckParser *p, int len, enum syck_level_status status )
+{
+    ASSERT( p != NULL );
+    if ( p->lvl_idx + 1 > p->lvl_capa )
+    {
+        p->lvl_capa += ALLOC_CT;
+        S_REALLOC_N( p->levels, SyckLevel, p->lvl_capa );
+    }
+
+    ASSERT( len > p->levels[p->lvl_idx-1].spaces );
+    p->levels[p->lvl_idx].spaces = len;
+    p->levels[p->lvl_idx].ncount = 0;
+    p->levels[p->lvl_idx].domain = syck_strndup( p->levels[p->lvl_idx-1].domain, strlen( p->levels[p->lvl_idx-1].domain ) );
+    p->levels[p->lvl_idx].status = status;
+    p->lvl_idx += 1;
+}
+
+void
+free_any_io( SyckParser *p )
+{
+    ASSERT( p != NULL );
+    switch ( p->io_type )
+    {
+        case syck_io_str:
+            if ( p->io.str != NULL ) 
+            {
+                S_FREE( p->io.str );
+                p->io.str = NULL;
+            }
+        break;
+
+        case syck_io_file:
+            if ( p->io.file != NULL ) 
+            {
+                S_FREE( p->io.file );
+                p->io.file = NULL;
+            }
+        break;
+    }
+}
+
+long
+syck_move_tokens( SyckParser *p )
+{
+    long count, skip;
+    ASSERT( p->buffer != NULL );
+
+    if ( p->token == NULL )
+        return 0;
+
+    skip = p->limit - p->token;
+    if ( ( count = p->token - p->buffer ) )
+    {
+	if (skip > 0)
+	    S_MEMMOVE( p->buffer, p->token, char, skip );
+        p->token = p->buffer;
+        p->marker -= count;
+        p->cursor -= count;
+        p->toktmp -= count;
+        p->limit -= count;
+        p->lineptr -= count;
+        p->linectptr -= count;
+    }
+    return skip;
+}
+
+void
+syck_check_limit( SyckParser *p, long len )
+{
+    if ( p->cursor == NULL )
+    {
+        p->cursor = p->buffer;
+        p->lineptr = p->buffer;
+        p->linectptr = p->buffer;
+        p->marker = p->buffer;
+    }
+    p->limit = p->buffer + len;
+}
+
+long
+syck_parser_read( SyckParser *p )
+{
+    long len = 0;
+    long skip = 0;
+    ASSERT( p != NULL );
+    switch ( p->io_type )
+    {
+        case syck_io_str:
+            skip = syck_move_tokens( p );
+            len = (p->io.str->read)( p->buffer, p->io.str, SYCK_BUFFERSIZE - 1, skip );
+            break;
+
+        case syck_io_file:
+            skip = syck_move_tokens( p );
+            len = (p->io.file->read)( p->buffer, p->io.file, SYCK_BUFFERSIZE - 1, skip );
+            break;
+    }
+    syck_check_limit( p, len );
+    return len;
+}
+
+long
+syck_parser_readlen( SyckParser *p, long max_size )
+{
+    long len = 0;
+    long skip = 0;
+    ASSERT( p != NULL );
+    switch ( p->io_type )
+    {
+        case syck_io_str:
+            skip = syck_move_tokens( p );
+            len = (p->io.str->read)( p->buffer, p->io.str, max_size, skip );
+            break;
+
+        case syck_io_file:
+            skip = syck_move_tokens( p );
+            len = (p->io.file->read)( p->buffer, p->io.file, max_size, skip );
+            break;
+    }
+    syck_check_limit( p, len );
+    return len;
+}
+
+SYMID
+syck_parse( SyckParser *p )
+{
+    ASSERT( p != NULL );
+
+    syck_st_free( p );
+    syck_parser_reset_levels( p );
+    syckparse( p );
+    return p->root;
+}
+
+void
+syck_default_error_handler( SyckParser *p, char *msg )
+{
+    printf( "Error at [Line %d, Col %d]: %s\n", 
+        p->linect,
+        p->cursor - p->lineptr,
+        msg );
+}
+