html.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 741 行 · 第 1/2 页

            return( alloc_size );
        }
        break;
    }

    if( *skip_blank( ptr ) == '\0' ) {
        /* ignore blanks lines before the topic starts */
        if( !Curr_ctx->empty ) {
            /* the line is completely blank. This tells us to output
               a blank line. BUT, all lists and things automatically
               generate blank lines before they display, so we
               must pend the line */
            Blank_line_pfx = TRUE;
        }
        return( alloc_size );
    }

    /* An explanation of 'Blank_line_pfx': when we hit a blank line,
       we set Blank_line_pfx to TRUE. On the non-tag next line, the
       blank line is generated.
       Some tags automatically generate a blank line, so they
       turn this flag off. This causes the next non-tag line to NOT
       put out the blank line */

    if( Blank_line_pfx || Blank_line_sfx )
    {
        line_len += trans_add_str( "<P>", section, &alloc_size );
        Blank_line_pfx = FALSE;
    }
    Blank_line_sfx = TRUE;

    /* An explanation of 'Blank_line_sfx': some ending tags automatically
       generate a blank line, so no blank line after them should get
       generated. Normally, this flag is set to TRUE, but ending
       tags and Defn list term tags set this FALSE, so no extra '<P>'
       is generated.
       But, this rule only applies if a blank line immediately
       follows the tag, so its reset here regardless */
#if 0


   if( *ptr != CH_LIST_ITEM && *ptr != CH_DLIST_TERM &&
                                    *ptr != CH_DLIST_DESC && !Tab_xmp ) {
        /* a .br in front of li and dt would generate extra spaces */
        if( ! done_blank )
           line_len += trans_add_str( "<P>", section, &alloc_size );
    }
#endif

    term_fix = FALSE;
    for( ;; ) {
        ch = *ptr;
        if( ch == '\0' ) {
            if( term_fix ) {
//              trans_add_str( "</hp2>", section, &alloc_size );
                term_fix = FALSE;
            }
            trans_add_char( '\n', section, &alloc_size );
            break;
        } else if( ch == CH_HLINK || ch == CH_DFN ) {
            Curr_ctx->empty = FALSE;
            /* there are no popups in IPF, so treat them as links */
            ctx_name = ptr + 1;
            ptr = strchr( ptr + 1, ch );
            if( ptr == NULL ) {
                error( ERR_BAD_LINK_DFN, TRUE );
            }
            *ptr = '\0';
            ctx_text = ptr + 1;
            ptr = strchr( ctx_text + 1, ch );
            if( ptr == NULL ) {
              error( ERR_BAD_LINK_DFN, TRUE );
            }
            *ptr = '\0';
            add_link( ctx_name );
            sprintf( buf, "<A HREF=\"#%s\">", ctx_name );
            line_len += trans_add_str( buf, section, &alloc_size );
            line_len += trans_add_str_html( ctx_text, section, &alloc_size );
            ch_len += strlen( ctx_text );
            line_len += trans_add_str( "</A>", section, &alloc_size );
            ++ptr;
        } else if( ch == CH_FLINK ) {
            Curr_ctx->empty = FALSE;
            file_name = strchr( ptr + 1, ch );
            if( file_name == NULL ) {
                error( ERR_BAD_LINK_DFN, TRUE );
            }
            ctx_name = strchr( file_name + 1, ch );
            if( ctx_name == NULL ) {
                error( ERR_BAD_LINK_DFN, TRUE );
            }
            ctx_text = strchr( ctx_name + 1, ch );
            if( ctx_text == NULL ) {
                error( ERR_BAD_LINK_DFN, TRUE );
            }
            *ctx_text = '\0';
            ctx_text = ctx_name + 1;
            *ctx_name = '\0';
            ctx_name = file_name + 1;
            *file_name = '\0';
            file_name = ptr + 1;
            sprintf( buf, "<A HREF=\"#%s\">", ctx_name );
            line_len += trans_add_str( buf, section, &alloc_size );
            line_len += trans_add_str_html( ctx_text, section, &alloc_size );
            ch_len += strlen( ctx_text );
            line_len += trans_add_str( "</A>", section, &alloc_size );
            ptr = ctx_text + strlen( ctx_text ) + 1;
        } else if( ch == CH_LIST_ITEM ) {
            /* list item */
            line_len += trans_add_str( "<LI>", section, &alloc_size );
            ptr = skip_blank( ptr + 1 );
        } else if( ch == CH_DLIST_DESC ) {
            trans_add_str( "<DD>", section, &alloc_size );
            ptr = skip_blank( ptr + 1 );
        } else if( ch == CH_DLIST_TERM ) {
            /* definition list term */
            line_len += trans_add_str( "<DT>", section, &alloc_size );
            term_fix = TRUE;
            ptr = skip_blank( ptr + 1 );
            Blank_line_sfx = FALSE;
        } else if( ch == CH_CTX_KW ) {
            end = strchr( ptr + 1, CH_CTX_KW );
            memcpy( buf, ptr + 1, end - ptr - 1 );
            buf[end - ptr - 1] = '\0';
            add_ctx_keyword( Curr_ctx, buf );
            ptr = end + 1;
            if( *ptr == ' ' ) {
                /* kludge fix cuz of GML: GML thinks that keywords are
                   are real words, so it puts a space after them.
                   This should fix that */
                ++ptr;
            }
        } else if( ch == CH_PAR_RESET ) {
            /* this can be ignored for IPF */
            ++ptr;
        } else if( ch == CH_BMP ) {
            Curr_ctx->empty = FALSE;
            ++ptr;
            ch = *ptr;
            ptr += 2;
            end = strchr( ptr, CH_BMP );
            *end = '\0';
           // convert filenames to lower case
           strlwr( ptr );
           switch( ch ) {
            case 'i':
                sprintf( buf, "<IMG SRC=\"%s\">", ptr );
                break;

            case 'l':
                sprintf( buf, "<IMG SRC=\"%s\" ALIGN=TOP>", ptr );
                break;

            case 'r':
                sprintf( buf, "<IMG SRC=\"%s\" ALIGN=BOTTOM>", ptr );
                break;

            case 'c':
                sprintf( buf, "<IMG SRC=\"%s\" ALIGN=MIDDLE>", ptr );
                break;
            }
            line_len += trans_add_str( buf, section, &alloc_size );
            ptr = end + 1;
        } else if( ch == CH_FONTSTYLE_START ) {
            ++ptr;
            end = strchr( ptr, CH_FONTSTYLE_START );
            font_idx = 0;
            for( ; ptr != end; ++ptr ) {
                switch( *ptr ) {

                case 'b':
                    font_idx |= FONT_STYLE_BOLD;
                    break;

                case 'i':
                    font_idx |= FONT_STYLE_ITALIC;
                    break;

                case 'u':
                case 's':
                    font_idx |= FONT_STYLE_UNDERLINE;
                    break;
                }
            }
            line_len += trans_add_str( Font_match[font_idx],
                                                section, &alloc_size );
            Font_list[Font_list_curr] = font_idx;
            ++Font_list_curr;
            ++ptr;
        } else if( ch == CH_FONTSTYLE_END ) {
            --Font_list_curr;
            line_len += trans_add_str( Font_end[Font_list[Font_list_curr]],
                                                section, &alloc_size );
            ++ptr;
        } else if( ch == CH_FONTTYPE ) {
            ++ptr;
            end = strchr( ptr, CH_FONTTYPE );
            *end = '\0';

            if( stricmp( ptr, Fonttype_courier ) == 0 ) {
               strcpy( buf, "<TT>" );
            } else {
               /* default system font */
               strcpy( buf, "</TT>" );
            }
            ptr = end + 1;
            end = strchr( ptr, CH_FONTTYPE );
            line_len += trans_add_str( buf, section, &alloc_size );
            ptr = end + 1;
        } else {
            ++ptr;
            Curr_ctx->empty = FALSE;
            if( Tab_xmp && ch == Tab_xmp_char ) {
                len = tab_align( ch_len, section, &alloc_size );
                ch_len += len;
                line_len += len * sizeof( HTML_SPACE );
                ptr = skip_blank( ptr );
            }
            if( line_len > 120 && ch == ' ' && !Tab_xmp ) {
                /* break onto the next line */
                line_len = 0;
                trans_add_char( '\n', section, &alloc_size );
                if( *ptr == ' ' ) {
                    line_len += trans_add_str( HTML_SPACE, section, &alloc_size );
                    ++ch_len;
                    ptr++;
                }
            } else {
                line_len += trans_add_char_html( ch, *ptr, section, &alloc_size );
                ++ch_len;
            }
        }
    }

    return( alloc_size );
}

static void output_hdr(
/*********************/

    void
) {
    whp_fprintf( Out_file, "<HEAD>\n" );
    if( Ipf_title != NULL && Ipf_title[0] != '\0' ) {
        whp_fprintf( Out_file, "<TITLE> %s </TITLE>\n", Ipf_title );
    }
    whp_fprintf( Out_file, "</HEAD>\n" );
    whp_fprintf( Out_file, "<BODY>\n" );
}

static void output_ctx_hdr(
/*************************/

    ctx_def                     *ctx
) {
    int                         head_level;
    int                         p_skip;

    head_level = ctx->head_level;
    if( head_level == 0 ) {
        /* OS/2 can't handle heading level 0 */
        head_level = 1;
    }
    head_level -= Curr_head_skip;
    if( head_level > Curr_head_level + 1 ) {
        /* you can't skip heading levels upwards in IPF. To handle this,
           you go up to the next level, and keep track of the
           skip for future heading levels. */
        p_skip = head_level - Curr_head_level - 1 ;
        head_level -= p_skip;
        Curr_head_skip += p_skip;
    } else if( head_level < Curr_head_level ) {
        head_level += Curr_head_skip;
        if( head_level > Curr_head_level ) {
            /* we moved down levels, but we're still too high! */
            Curr_head_skip = head_level - Curr_head_level;
            head_level -= Curr_head_skip;
        } else {
            Curr_head_skip = 0;
        }
    }

    Curr_head_level = head_level;

    whp_fprintf( Out_file, "<H%d", head_level);
    whp_fprintf( Out_file, " ID=\"%s\">", translate_str_html( ctx->ctx_name ));
    whp_fprintf( Out_file, " %s </H%d>\n", translate_str_html( ctx->title ), head_level);

#if 0
    if( ctx->keylist != NULL ) {
                for( keylist = ctx->keylist; keylist != NULL;
                                            keylist = keylist->next ) {
            key = keylist->key;
            ptr = key->keyword;
            if( !key->duplicate ) {
                fputs( "<i1>", Out_file );
            } else {
                if( key->defined_ctx == ctx ) {
                    /* this is the first instance. :i1 and :i2 */
                    fprintf( Out_file, "<i1 id=%d>%s\n",
                                    key->id, translate_str_html( ptr ) );
                }

                if( stricmp( ptr, ctx->title ) == 0 ) {
                    /* we are about to out an index subentry whose
                       name is the same as the main index entry!
                       Skip it! */
                    continue;
                }
                fprintf( Out_file, "<i2 refid=%d>", key->id );
                ptr = ctx->title;
            }
            fputs( translate_str_html( ptr ), Out_file );
            fputc( '\n', Out_file );
                }
          }
#endif


        if( Real_ipf_font ) {
        /* The default font is system, which wouldn't be right */
        whp_fprintf( Out_file, "<font facename=Helv size=10x10>\n" );
    }
    /* browse lists are not used in IPF */
    /* nor does 'Up' topicing have any relevance */
}

static void output_end(
/*********************/

    void
) {
    whp_fprintf( Out_file, "</BODY>\n" );
}

static void output_ctx_sections(
/******************************/

    ctx_def                     *ctx
) {
    section_def                 *section;

    for( section = ctx->section_list; section != NULL; ) {
        if( section->section_size > 0 ) {
            whp_fwrite( section->section_text, 1,
                                        section->section_size, Out_file );
        }
        section = section->next;
    }
}

void html_output_file(
/*******************/

    void
) {
    ctx_def                     *ctx;

    output_hdr();
    for( ctx = Ctx_list; ctx != NULL; ctx = ctx->next ) {
        if( !Remove_empty || !ctx->empty || ctx->req_by_link ) {
            if( !Exclude_special || !is_special_topic( ctx, FALSE ) ) {
                output_ctx_hdr( ctx );
                output_ctx_sections( ctx );
            }
        }
    }
    output_end();
}