Line data    Source code

       1             : /* File: io_txt_writer.c; Copyright and License: see below */
       2             : 
       3             : #include "format/io_txt_writer.h"
       4             : #include "u8/u8_trace.h"
       5             : #include "u8/u8_log.h"
       6             : #include <stdio.h>
       7             : #include <stdbool.h>
       8             : #include <assert.h>
       9             : 
      10             : enum io_txt_writer_indent_enum {
      11             :     TXT_WRITER_INDENT_COLUMN = 48,  /*!< the text column in which the id starts */
      12             : };
      13             : 
      14             : static const char TXT_ID_INDENT_SPACES[TXT_WRITER_INDENT_COLUMN+1] = "                                                ";
      15             : static const char TXT_NEWLINE[] = "\n";
      16             : 
      17           7 : void io_txt_writer_init ( io_txt_writer_t *this_,
      18             :                           universal_output_stream_t *output )
      19             : {
      20           7 :     U8_TRACE_BEGIN();
      21           7 :     assert( NULL != output );
      22             : 
      23           7 :     (*this_).output = output;
      24             : 
      25           7 :     U8_TRACE_END();
      26           7 : }
      27             : 
      28           7 : void io_txt_writer_destroy( io_txt_writer_t *this_ )
      29             : {
      30           7 :     U8_TRACE_BEGIN();
      31             : 
      32           7 :     (*this_).output = NULL;
      33             : 
      34           7 :     U8_TRACE_END();
      35           7 : }
      36             : 
      37           7 : u8_error_t io_txt_writer_write_indent_multiline_string ( io_txt_writer_t *this_,
      38             :                                                          const char *indent,
      39             :                                                          const char *multiline_string )
      40             : {
      41           7 :     U8_TRACE_BEGIN();
      42           7 :     assert( NULL != indent );
      43           7 :     assert( NULL != (*this_).output );
      44           7 :     u8_error_t result = U8_ERROR_NONE;
      45           7 :     const size_t indent_length = strlen( indent );
      46             : 
      47           7 :     if ( NULL != multiline_string )
      48             :     {
      49           6 :         const char *line_start = multiline_string;
      50           6 :         size_t line_length = 0;
      51           6 :         bool ignore_newline = false;  /* newlines after returns are ignored */
      52             : 
      53           6 :         size_t length = strlen( multiline_string );
      54          38 :         for ( size_t index = 0; index < length; index ++ )
      55             :         {
      56          32 :             bool end_of_line = false;
      57             : 
      58          32 :             char current = multiline_string[index];
      59          32 :             if ( '\r' == current )
      60             :             {
      61           4 :                 ignore_newline = true;
      62           4 :                 end_of_line = true;
      63             :             }
      64          28 :             else if ( '\n' == current )
      65             :             {
      66           4 :                 if ( ignore_newline )
      67             :                 {
      68           2 :                     line_start = &(multiline_string[index+1]);
      69             :                 }
      70             :                 else
      71             :                 {
      72           2 :                     end_of_line = true;
      73             :                 }
      74           4 :                 ignore_newline = false;
      75             :             }
      76             :             else
      77             :             {
      78          24 :                 ignore_newline = false;
      79          24 :                 line_length ++;
      80          24 :                 if ( index+1 == length )
      81             :                 {
      82           2 :                     end_of_line = true;
      83             :                 }
      84             :             }
      85             : 
      86          32 :             if ( end_of_line )
      87             :             {
      88             :                 /* print indent pattern */
      89           8 :                 result |= universal_output_stream_write ( (*this_).output, indent, indent_length );
      90             : 
      91             :                 /* print next line */
      92           8 :                 result |= universal_output_stream_write ( (*this_).output, line_start, line_length );
      93             : 
      94             :                 /* print newline */
      95           8 :                 result |= universal_output_stream_write ( (*this_).output, TXT_NEWLINE, strlen(TXT_NEWLINE) );
      96             : 
      97             :                 /* reset line indices */
      98           8 :                 line_start = &(multiline_string[index+1]);
      99           8 :                 line_length = 0;
     100             :             }
     101             :         }
     102             :     }
     103             : 
     104           7 :     U8_TRACE_END_ERR( result );
     105           7 :     return result;
     106             : }
     107             : 
     108           0 : u8_error_t io_txt_writer_write_indent_id ( io_txt_writer_t *this_, int indent_width, data_id_t id )
     109             : {
     110           0 :     U8_TRACE_BEGIN();
     111           0 :     assert( DATA_TABLE_VOID != data_id_get_table(&id) );
     112           0 :     assert( DATA_ROW_ID_VOID != data_id_get_row_id(&id) );
     113           0 :     assert( NULL != (*this_).output );
     114             :     assert( sizeof(TXT_ID_INDENT_SPACES) == 1+TXT_WRITER_INDENT_COLUMN );
     115           0 :     u8_error_t result = U8_ERROR_NONE;
     116             : 
     117             :     /* indent */
     118           0 :     if ( indent_width > TXT_WRITER_INDENT_COLUMN )
     119             :     {
     120           0 :         U8_LOG_ERROR_INT( "more spaces requested than available. missing:", indent_width - TXT_WRITER_INDENT_COLUMN );
     121           0 :         indent_width = TXT_WRITER_INDENT_COLUMN;
     122             :     }
     123           0 :     if ( indent_width > 0 )
     124             :     {
     125           0 :         result |= universal_output_stream_write( (*this_).output, &TXT_ID_INDENT_SPACES, indent_width );
     126             :     }
     127             : 
     128             :     /* print id */
     129             :     {
     130             :         char id_buf[DATA_ID_MAX_UTF8STRING_SIZE+2];
     131           0 :         utf8stringbuf_t id_str = UTF8STRINGBUF( id_buf );
     132           0 :         utf8stringbuf_clear( id_str );
     133           0 :         utf8stringbuf_append_str( id_str, " [" );
     134           0 :         data_id_to_utf8stringbuf( &id, id_str );
     135           0 :         utf8stringbuf_append_str( id_str, "]" );
     136             : 
     137           0 :         const unsigned int len = utf8stringbuf_get_length(id_str);
     138           0 :         result |= universal_output_stream_write( (*this_).output, utf8stringbuf_get_string(id_str), len );
     139             :     }
     140             : 
     141           0 :     U8_TRACE_END_ERR( result );
     142           0 :     return result;
     143             : }
     144             : 
     145           0 : u8_error_t io_txt_writer_write_plain_id ( io_txt_writer_t *this_, data_id_t id )
     146             : {
     147           0 :     U8_TRACE_BEGIN();
     148           0 :     assert( DATA_TABLE_VOID != data_id_get_table(&id) );
     149           0 :     assert( DATA_ROW_ID_VOID != data_id_get_row_id(&id) );
     150           0 :     assert( NULL != (*this_).output );
     151           0 :     u8_error_t result = U8_ERROR_NONE;
     152             : 
     153             :     /* print id */
     154             :     {
     155             :         char id_buf[DATA_ID_MAX_UTF8STRING_SIZE];
     156           0 :         utf8stringbuf_t id_str = UTF8STRINGBUF( id_buf );
     157           0 :         utf8stringbuf_clear( id_str );
     158           0 :         data_id_to_utf8stringbuf( &id, id_str );
     159             : 
     160           0 :         const unsigned int len = utf8stringbuf_get_length(id_str);
     161           0 :         result |= universal_output_stream_write ( (*this_).output, utf8stringbuf_get_string(id_str), len );
     162             :     }
     163             : 
     164           0 :     U8_TRACE_END_ERR( result );
     165           0 :     return result;
     166             : }
     167             : 
     168             : 
     169             : /*
     170             : Copyright 2017-2024 Andreas Warnke
     171             : 
     172             : Licensed under the Apache License, Version 2.0 (the "License");
     173             : you may not use this file except in compliance with the License.
     174             : You may obtain a copy of the License at
     175             : 
     176             :     http://www.apache.org/licenses/LICENSE-2.0
     177             : 
     178             : Unless required by applicable law or agreed to in writing, software
     179             : distributed under the License is distributed on an "AS IS" BASIS,
     180             : WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     181             : See the License for the specific language governing permissions and
     182             : limitations under the License.
     183             : */