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cb246eb781
* replace split* functions with Extract* functions * Add Directory caching git-svn-id: trunk@5102 -
390 lines
8.2 KiB
ObjectPascal
390 lines
8.2 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Peter Vreman
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This unit implements the message object
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit cmsgs;
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{$i fpcdefs.inc}
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interface
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const
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maxmsgidxparts = 20;
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type
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ppchar=^pchar;
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TArrayOfPChar = array[0..1000] of pchar;
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PArrayOfPChar = ^TArrayOfPChar;
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PMessage=^TMessage;
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TMessage=object
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msgfilename : string;
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msgintern : boolean;
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msgallocsize,
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msgsize,
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msgparts,
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msgs : longint;
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msgtxt : pchar;
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msgidx : array[1..maxmsgidxparts] of PArrayOfPChar;
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msgidxmax : array[1..maxmsgidxparts] of longint;
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constructor Init(n:longint;const idxmax:array of longint);
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destructor Done;
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function LoadIntern(p:pointer;n:longint):boolean;
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function LoadExtern(const fn:string):boolean;
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procedure ClearIdx;
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procedure CreateIdx;
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function GetPChar(nr:longint):pchar;
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function Get(nr:longint;const args:array of string):string;
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end;
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{ this will read a line until #10 or #0 and also increase p }
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function GetMsgLine(var p:pchar):string;
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implementation
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uses
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SysUtils,
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cutils;
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function MsgReplace(const s:string;const args:array of string):string;
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var
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last,
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i : longint;
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hs : string;
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begin
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if s='' then
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begin
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MsgReplace:='';
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exit;
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end;
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hs:='';
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i:=0;
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last:=0;
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while (i<length(s)-1) do
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begin
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inc(i);
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if (s[i]='$') and (s[i+1] in ['1'..'9']) then
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begin
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hs:=hs+copy(s,last+1,i-last-1)+args[byte(s[i+1])-byte('1')];
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inc(i);
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last:=i;
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end;
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end;
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MsgReplace:=hs+copy(s,last+1,length(s)-last);;
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end;
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constructor TMessage.Init(n:longint;const idxmax:array of longint);
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var
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i : longint;
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begin
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msgtxt:=nil;
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msgsize:=0;
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msgparts:=n;
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if n<>high(idxmax)+1 then
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fail;
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for i:=1 to n do
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begin
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msgidxmax[i]:=idxmax[i-1];
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getmem(msgidx[i],msgidxmax[i]*sizeof(pointer));
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fillchar(msgidx[i]^,msgidxmax[i]*sizeof(pointer),0);
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end;
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end;
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destructor TMessage.Done;
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var
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i : longint;
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begin
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for i:=1 to msgparts do
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freemem(msgidx[i],msgidxmax[i]*sizeof(pointer));
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if msgallocsize>0 then
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begin
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freemem(msgtxt,msgsize);
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msgallocsize:=0;
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end;
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msgtxt:=nil;
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msgsize:=0;
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msgparts:=0;
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end;
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function TMessage.LoadIntern(p:pointer;n:longint):boolean;
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begin
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msgtxt:=pchar(p);
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msgsize:=n;
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msgallocsize:=0;
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msgintern:=true;
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ClearIdx;
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CreateIdx;
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LoadIntern:=true;
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end;
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function TMessage.LoadExtern(const fn:string):boolean;
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const
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bufsize=8192;
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var
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f : text;
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error,multiline : boolean;
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line,i,j : longint;
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ptxt : pchar;
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s,s1 : string;
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buf : pointer;
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procedure err(const msgstr:string);
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begin
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writeln('*** PPC, file ',fn,', error in line ',line,': ',msgstr);
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error:=true;
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end;
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begin
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LoadExtern:=false;
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getmem(buf,bufsize);
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{ Read the message file }
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assign(f,fn);
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{$I-}
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reset(f);
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{$I+}
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if ioresult<>0 then
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begin
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WriteLn('*** PPC, can not open message file ',fn);
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exit;
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end;
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settextbuf(f,buf^,bufsize);
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{ First parse the file and count bytes needed }
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error:=false;
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line:=0;
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multiline:=false;
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msgsize:=0;
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while not eof(f) do
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begin
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readln(f,s);
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inc(line);
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if multiline then
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begin
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if s=']' then
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multiline:=false
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else
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inc(msgsize,length(s)+1); { +1 for linebreak }
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end
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else
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begin
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if (s<>'') and not(s[1] in ['#',';','%']) then
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begin
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i:=pos('=',s);
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if i>0 then
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begin
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j:=i+1;
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if not(s[j] in ['0'..'9']) then
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err('no number found')
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else
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begin
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while (s[j] in ['0'..'9']) do
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inc(j);
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end;
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if j-i-1<>5 then
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err('number length is not 5');
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if s[j+1]='[' then
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begin
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inc(msgsize,j-i);
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multiline:=true
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end
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else
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inc(msgsize,length(s)-i+1);
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end
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else
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err('no = found');
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end;
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end;
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end;
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if multiline then
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err('still in multiline mode');
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if error then
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begin
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freemem(buf,bufsize);
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close(f);
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exit;
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end;
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{ now read the buffer in mem }
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msgallocsize:=msgsize;
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getmem(msgtxt,msgallocsize);
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ptxt:=msgtxt;
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reset(f);
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while not eof(f) do
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begin
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readln(f,s);
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if multiline then
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begin
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if s=']' then
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begin
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multiline:=false;
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{ overwrite last eol }
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dec(ptxt);
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ptxt^:=#0;
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inc(ptxt);
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end
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else
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begin
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move(s[1],ptxt^,length(s));
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inc(ptxt,length(s));
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ptxt^:=#10;
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inc(ptxt);
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end;
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end
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else
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begin
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if (s<>'') and not(s[1] in ['#',';','%']) then
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begin
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i:=pos('=',s);
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if i>0 then
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begin
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j:=i+1;
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while (s[j] in ['0'..'9']) do
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inc(j);
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{ multiline start then no txt }
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if s[j+1]='[' then
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begin
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s1:=Copy(s,i+1,j-i);
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move(s1[1],ptxt^,length(s1));
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inc(ptxt,length(s1));
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multiline:=true;
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end
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else
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begin
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{ txt including number }
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s1:=Copy(s,i+1,255);
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move(s1[1],ptxt^,length(s1));
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inc(ptxt,length(s1));
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ptxt^:=#0;
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inc(ptxt);
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end;
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end;
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end;
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end;
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end;
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close(f);
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freemem(buf,bufsize);
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{ now we can create the index, clear if the previous load was also
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an external file, because those can't be reused }
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if not msgintern then
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ClearIdx;
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CreateIdx;
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{ set that we've loaded an external file }
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msgintern:=false;
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LoadExtern:=true;
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end;
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procedure TMessage.ClearIdx;
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var
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i : longint;
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begin
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{ clear }
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for i:=1 to msgparts do
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fillchar(msgidx[i]^,msgidxmax[i]*sizeof(pointer),0);
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end;
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procedure TMessage.CreateIdx;
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var
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hp1,
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hp,hpend : pchar;
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code : integer;
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num : longint;
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number : string[5];
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i : longint;
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numpart,numidx : longint;
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begin
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{ process msgtxt buffer }
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number:='00000';
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hp:=msgtxt;
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hpend:=@msgtxt[msgsize];
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while (hp<hpend) do
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begin
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hp1:=hp;
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for i:=1 to 5 do
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begin
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number[i]:=hp1^;
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inc(hp1);
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end;
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val(number,num,code);
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numpart:=num div 1000;
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numidx:=num mod 1000;
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{ check range }
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if (numpart <= msgparts) and (numidx < msgidxmax[numpart]) then
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begin
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{ skip _ }
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inc(hp1);
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{ put the address in the idx, the numbers are already checked }
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msgidx[numpart]^[numidx]:=hp1;
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end;
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{ next string }
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hp:=pchar(@hp[strlen(hp)+1]);
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end;
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end;
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function GetMsgLine(var p:pchar):string;
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var
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i : longint;
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begin
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i:=0;
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while not(p^ in [#0,#10]) and (i<255) do
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begin
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inc(i);
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GetMsgLine[i]:=p^;
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inc(p);
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end;
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{ skip #10 }
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if p^=#10 then
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inc(p);
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{ if #0 then set p to nil }
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if p^=#0 then
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p:=nil;
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{ return string }
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GetMsgLine[0]:=chr(i);
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end;
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function TMessage.GetPChar(nr:longint):pchar;
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begin
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GetPChar:=msgidx[nr div 1000]^[nr mod 1000];
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end;
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function TMessage.Get(nr:longint;const args:array of string):string;
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var
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hp : pchar;
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begin
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hp:=msgidx[nr div 1000]^[nr mod 1000];
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if hp=nil then
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Get:='msg nr '+tostr(nr)
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else
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Get:=MsgReplace(strpas(hp),args);
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end;
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end.
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