--- parser3/src/main/pa_common.C	2001/04/03 17:01:03	1.39
+++ parser3/src/main/pa_common.C	2001/11/09 11:47:55	1.87
@@ -1,22 +1,12 @@
-
 /** @file
 	Parser: commonly functions.
 
 	Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)
+	Author: Alexander Petrosyan <paf@design.ru>(http://paf.design.ru)
 
-	Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)
-
-	$Id: pa_common.C,v 1.39 2001/04/03 17:01:03 paf Exp $
+	$Id: pa_common.C,v 1.87 2001/11/09 11:47:55 paf Exp $
 */
 
-#include "pa_config_includes.h"
-
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <io.h>
-#include <stdio.h>
-#include <errno.h>
-
 #include "pa_common.h"
 #include "pa_types.h"
 #include "pa_exception.h"
@@ -26,6 +16,16 @@
 #include "pa_hash.h"
 #include "pa_string.h"
 
+#ifndef _O_TEXT
+#	define _O_TEXT 0
+#endif
+#ifndef _O_BINARY
+#	define _O_BINARY 0
+#endif
+#ifndef O_TRUNC
+#	define O_TRUNC 0
+#endif
+
 #if _MSC_VER
 
 int __vsnprintf(char *b, size_t s, const char *f, va_list l) {
@@ -43,22 +43,55 @@ int __snprintf(char *b, size_t s, const
 
 #endif
 
+static char *strnchr(char *buf, size_t size, char c) {
+	for(; size-->0; buf++) {
+		if(*buf==c)
+			return buf;
+	}
+
+	return 0;
+}
+
+void fix_line_breaks(char *buf, size_t& size) {
+	//_asm int 3;
+	const char * const eob=buf+size;
+	char *dest=buf;
+	// fix DOS: \r\n -> \n
+	// fix Macintosh: \r -> \n
+	char *bol=buf;
+	while(char *eol=strnchr(bol, eob -bol, '\r')) {
+		size_t len=eol-bol;
+		if(dest!=bol)
+			memcpy(dest, bol, len);
+		dest+=len;
+		*dest++='\n';
+
+		if(&eol[1]<eob && eol[1]=='\n') { // \r,\n = DOS
+			bol=eol+2;
+			size--;
+		} else // \r,not \n = Macintosh
+			bol=eol+1;
+	}
+	// last piece without \r, including terminating 0
+	if(dest!=bol)
+		memcpy(dest, bol, eob-bol);
+}
 
 char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) {
-	void *result;
-	size_t size;
-	return file_read(pool, file_spec, result, size, true, 
-		fail_on_read_problem)?(char *)result:0;
+	void *result;  size_t size;
+	return file_read(pool, file_spec, result, size, true, fail_on_read_problem)?(char *)result:0;
 }
 bool file_read(Pool& pool, const String& file_spec, 
-			   void*& data, size_t& size, bool as_text,
-			   bool fail_on_read_problem) {
-	char *fname=file_spec.cstr(String::UL_FILE_NAME);
+			   void*& data, size_t& data_size, bool as_text,
+			   bool fail_on_read_problem,
+			   size_t offset, size_t limit) {
+	const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
+//printf("file_read(%s)\n", fname);
 	int f;
     struct stat finfo;
 
 	// first open, next stat:
-	// directory update of NTFS symbolic links performed on open.
+	// directory update of NTFS hard links performed on open.
 	// ex: 
 	//   a.html:^test[] and b.html hardlink to a.html
 	//   user inserts ! before ^test in a.html
@@ -66,80 +99,175 @@ bool file_read(Pool& pool, const String&
 	//   they delay update till open, so we would receive "!^test[" string
 	//   if would do stat, next open.
     if(
-		(f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0 && 
+		(f=open(fname, O_RDONLY|(as_text?_O_BINARY/*_O_TEXT*/:_O_BINARY)))>=0 && 
 		stat(fname, &finfo)==0) {
 		/*if(exclusive)
 			flock(f, LOCK_EX);*/
-		data=pool.malloc(finfo.st_size+(as_text?1:0));
-		size=read(f, data, finfo.st_size);
+		size_t max_size=limit?min(offset+limit, finfo.st_size)-offset:finfo.st_size;
+		int read_size;
+		if(!max_size) { // eof
+			if(as_text) {
+				data=pool.malloc(1);
+				*(char*)data=0;
+			} else 
+				data=0;
+			read_size=0;
+		} else {
+			data=pool.malloc(max_size+(as_text?1:0), 3);
+			if(offset)
+				lseek(f, offset, SEEK_SET);
+			read_size=read(f, data, max_size);
+		}
 		/*if(exclusive)
 			flock(f, LOCK_UN);*/
 		close(f);
+		if(!max_size) // eof
+			return true;
 
-		if(size>=0 && size<=(size_t)finfo.st_size) {
-			if(as_text)
-				((char *)data)[size]=0;
-		} else
-			PTHROW(0, 0, 
+		if(read_size<0 || read_size>max_size)
+			throw Exception(0, 0, 
 				&file_spec, 
-				"read failed: actually read %d bytes count not in [0..%ul] valid range", 
-					size, (unsigned long)finfo.st_size); //never
-		
-		return true;//prepare_config(result, remove_empty_lines);
+				"read failed: actually read %d bytes count not in [0..%lu] valid range", 
+					read_size, (unsigned long)max_size); //never
+
+		data_size=read_size;		
+		if(as_text) {
+			fix_line_breaks((char *)data, data_size);
+			// note: after fixing
+			((char*&)data)[data_size]=0;
+		}
+		return true;
     }
 	if(fail_on_read_problem)
-		PTHROW(0, 0, 
+		throw Exception(0, 0, 
 			&file_spec, 
-			"read failed: %s (#%d)", strerror(errno), errno);
+			"read failed: %s (%d), actual filename '%s'", 
+				strerror(errno), errno, fname);
     return false;
 }
 
-/// @test mkdirs
+static void create_dir_for_file(const String& file_spec) {
+	size_t pos_after=1;
+	int pos_before;
+	while((pos_before=file_spec.pos("/", 1, pos_after))>=0) {
+		mkdir(file_spec.mid(0, pos_before).cstr(String::UL_FILE_SPEC), 0775);
+		pos_after=pos_before+1;
+	}
+}
+
 void file_write(Pool& pool, 
 				const String& file_spec, 
 				const void *data, size_t size, 
-				bool as_text/*, 
+				bool as_text,
+				bool do_append/*, 
 				bool exclusive*/) {
-	char *fname=file_spec.cstr(String::UL_FILE_NAME);
+	const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
 	int f;
-	if(access(fname, F_OK)!=0) {/*no*/
-		if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
-			close(f);
-	}
-	if(access(fname, R_OK|W_OK)==0) {
-		int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY)
-#ifdef WIN32
-			|O_TRUNC
-#endif
-		;
-		if((f=open(fname, mode, 0666))>=0) {
-			/*if(exclusive)
-				flock(f, LOCK_EX);*/
-			
-			if(size) write(f, data, size);
-#ifndef WIN32
-			ftruncate(f, size);
+	if(access(fname, W_OK)!=0) // no
+		create_dir_for_file(file_spec);
+
+	if((f=open(fname, 
+		O_CREAT|O_RDWR
+		|(as_text?_O_TEXT:_O_BINARY)
+		|(do_append?O_APPEND:O_TRUNC), 0666))>=0) {
+		/*if(exclusive)
+			flock(f, LOCK_EX);*/
+		
+		if(size) write(f, data, size);
+#if O_TRUNC==0
+		ftruncate(f, size);
 #endif
-			/*if(exclusive)
-				flock(f, LOCK_UN);*/
-			close(f);
-			return;
-		}
-	}
-	PTHROW(0, 0, 
-		&file_spec, 
-		"write failed: %s (#%d)", strerror(errno), errno);
+		/*if(exclusive)
+			flock(f, LOCK_UN);*/
+		close(f);
+	} else
+		throw Exception(0, 0, 
+			&file_spec, 
+			"write failed: %s (%d), actual filename '%s'", 
+				strerror(errno), errno, fname);
 }
 
+// throws nothing! [this is required in file_move & file_delete]
+static void rmdir(const String& file_spec, size_t pos_after) {
+	int pos_before;
+	if((pos_before=file_spec.pos("/", 1, pos_after))>=0)
+		rmdir(file_spec, pos_before+1);
+	
+	rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::UL_FILE_SPEC));
+}
 void file_delete(Pool& pool, const String& file_spec) {
-	if(unlink(file_spec.cstr(String::UL_FILE_NAME))!=0)
-		PTHROW(0, 0, 
+	const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
+	if(unlink(fname)!=0)
+		throw Exception(0, 0, 
 			&file_spec, 
-			"unlink failed: %s (#%d)", strerror(errno), errno);
+			"unlink failed: %s (%d), actual filename '%s'", 
+				strerror(errno), errno, fname);
+
+	rmdir(file_spec, 1);
+}
+void file_move(Pool& pool, const String& old_spec, const String& new_spec) {
+	const char *old_spec_cstr=old_spec.cstr(String::UL_FILE_SPEC);
+	const char *new_spec_cstr=new_spec.cstr(String::UL_FILE_SPEC);
+	
+	create_dir_for_file(new_spec);
+
+	if(rename(old_spec_cstr, new_spec_cstr)!=0)
+		throw Exception(0, 0, 
+			&old_spec, 
+			"rename failed: %s (%d), actual filename '%s' to '%s'", 
+				strerror(errno), errno, old_spec_cstr, new_spec_cstr);
+
+	rmdir(old_spec, 1);
 }
 
+
+static bool entry_readable(const String& file_spec, bool need_dir) {
+    const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
+	struct stat finfo;
+	if(access(fname, R_OK)==0 && stat(fname, &finfo)==0) {
+		bool is_dir=finfo.st_mode&S_IFDIR != 0;
+		return is_dir==need_dir;
+	}
+	return false;
+}
 bool file_readable(const String& file_spec) {
-    return access(file_spec.cstr(String::UL_FILE_NAME), R_OK)==0;
+	return entry_readable(file_spec, false);
+}
+bool dir_readable(const String& file_spec) {
+	return entry_readable(file_spec, true);
+}
+String *file_readable(const String& path, const String& name) {
+	String *result=new(path.pool()) String(path);
+	*result << "/";
+	*result << name;
+	return file_readable(*result)?result:0;
+}
+bool file_executable(const String& file_spec) {
+    return access(file_spec.cstr(String::UL_FILE_SPEC), X_OK)==0;
+}
+
+bool file_stat(const String& file_spec, 
+			   size_t& rsize, 
+			   time_t& ratime,
+			   time_t& rmtime,
+			   time_t& rctime,
+			   bool fail_on_read_problem) {
+	Pool& pool=file_spec.pool();
+	const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
+    struct stat finfo;
+	if(stat(fname, &finfo)!=0)
+		if(fail_on_read_problem)
+			throw Exception(0, 0, 
+				&file_spec, 
+				"getting file size failed: %s (%d), real filename '%s'", 
+					strerror(errno), errno, fname);
+		else
+			return false;
+	rsize=finfo.st_size;
+	ratime=finfo.st_atime;
+	rmtime=finfo.st_mtime;
+	rctime=finfo.st_ctime;
+	return true;
 }
 
 char *getrow(char **row_ref, char delim) {
@@ -185,7 +313,7 @@ char *rsplit(char *string, char delim) {
 
 /// @todo less stupid type detection
 char *format(Pool& pool, double value, char *fmt) {
-	char *result=(char *)pool.malloc(MAX_NUMBER);
+	char *result=(char *)pool.malloc(MAX_NUMBER, 4);
 	if(fmt)
 		if(strpbrk(fmt, "diouxX"))
 			if(strpbrk(fmt, "ouxX"))
@@ -216,8 +344,8 @@ size_t stdout_write(const void *buf, siz
 #endif
 }
 
-const char *unescape_chars(Pool& pool, const char *cp, int len) {
-	char *s=(char *)pool.malloc(len + 1);
+char *unescape_chars(Pool& pool, const char *cp, int len) {
+	char *s=(char *)pool.malloc(len + 1, 5);
 	enum EscapeState {
 		EscapeRest, 
 		EscapeFirst, 
@@ -254,30 +382,39 @@ const char *unescape_chars(Pool& pool, c
 	return s;
 }
 
+/// used by attributed_meaning_to_string / append_attribute_subattribute
+struct Attributed_meaning_info {
+	String *header; // header line being constructed
+	String::Untaint_lang lang; // language in which to append to that line
+};
 static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue, 
 										  void *info) {
 	if(akey==VALUE_NAME)
 		return;
 
+	Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
+
 	// ...; charset=windows1251
-	String *string=static_cast<String *>(info);
-	if(string->size())
-		string->APPEND_CONST("; ");
-	string->append(akey, String::UL_HEADER, true);
-	string->APPEND_CONST("=");
-	string->append(static_cast<Value *>(avalue)->as_string(), 
-		String::UL_HEADER, true);
+	*ami.header << "; ";
+	ami.header->append(akey, ami.lang);
+	*ami.header << "=";
+	ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang);
 }
-const String& attributed_meaning_to_string(Value& meaning) {
+const String& attributed_meaning_to_string(Value& meaning, 
+										   String::Untaint_lang lang) {
 	String &result=*new(meaning.pool()) String(meaning.pool());
-	if(Hash *hash=meaning.get_hash()) {
+	if(Hash *hash=meaning.get_hash(0)) {
 		// $value(value) $subattribute(subattribute value)
 		if(Value *value=static_cast<Value *>(hash->get(*value_name)))
-			result.append(value->as_string(), String::UL_HEADER, true);
+			result.append(value->as_string(), lang, true);
 
-		hash->for_each(append_attribute_subattribute, &result);
+		Attributed_meaning_info attributed_meaning_info={
+			&result,
+			lang
+		};
+		hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
 	} else // result value
-		result.append(meaning.as_string(), String::UL_HEADER, true);
+		result.append(meaning.as_string(), lang, true);
 
 	return result;
 }
@@ -289,4 +426,63 @@ void back_slashes_to_slashes(char *s) {
 			if(*s=='\\')
 				*s='/';
 }
+/*
+void slashes_to_back_slashes(char *s) {
+	if(s)
+		for(; *s; s++)
+			if(*s=='/')
+				*s='\\';
+}
+*/
 #endif
+
+bool StrEqNc(const char *s1, const char *s2, bool strict) {
+	while(true) {
+		if(!(*s1)) {
+			if(!(*s2))
+				return true;
+			else
+				return !strict;
+		} else if(!(*s2))
+			return !strict;
+		if(isalpha(*s1)) {
+			if(tolower(*s1) !=tolower(*s2))
+				return false;
+		} else if((*s1) !=(*s2))
+			return false;
+		s1++;
+		s2++;
+	}
+}
+
+static bool isLeap(int year) {
+    return !(
+             (year % 4) || ((year % 400) && !(year % 100))
+            );
+}
+
+int getMonthDays(int year, int month) {
+    int monthDays[]={
+        31,
+        isLeap(year) ? 29 : 28,
+        31,
+        30,
+        31,
+        30,
+        31,
+        31,
+        30,
+        31,
+        30,
+        31
+    };
+    return monthDays[month];
+}
+
+void remove_crlf(char *start, char *end) {
+	for(char *p=start; p<end; p++)
+		switch(*p) {
+			case '\n': *p='|'; break;
+			case '\r': *p=' '; break;
+		}
+}