53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
#include "help.h"
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#include "lib/simple_viewer.h"
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void full_help(const char *name)
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{
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int ch_num = -1;
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/* dirty hack */
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if(!strcmp(name, "Train Tracks"))
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name = "Tracks";
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/* search the help text for a chapter with this name */
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for(int ch = 0; ch < help_numchapters; ++ch)
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{
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char *str = help_text + help_chapteroffsets[ch];
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char *ptr = strchr(str, ':') + 1;
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const char *namep = name;
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if(*ptr++ != ' ')
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continue;
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while(*ptr == *namep && *ptr && *namep)
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{
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ptr++;
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namep++;
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}
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if(*namep == '\0' && (*ptr == '\n' || *ptr == ' ')) /* full match */
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{
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ch_num = ch;
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break;
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}
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}
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if(ch_num < 0)
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{
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rb->splashf(HZ * 2, "No topic found for `%s' (REPORT ME!)", name);
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return;
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}
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char *buf = smalloc(help_maxlen + 1);
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rb->memset(buf, 0, help_maxlen + 1);
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if(ch_num < help_numchapters - 1)
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{
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/* safe to look ahead */
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memcpy(buf, help_text + help_chapteroffsets[ch_num], help_chapteroffsets[ch_num + 1] - help_chapteroffsets[ch_num]);
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}
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else
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rb->strlcpy(buf, help_text + help_chapteroffsets[ch_num], help_maxlen + 1);
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rb->lcd_set_foreground(LCD_WHITE);
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unsigned old_bg = rb->lcd_get_background();
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rb->lcd_set_background(LCD_BLACK);
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view_text(name, buf);
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rb->lcd_set_background(old_bg);
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sfree(buf);
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}
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