ass_editor/commands/fonts_graphics_commands/
clear.rs

1//! Commands for clearing embedded fonts and graphics sections in ASS documents
2
3use crate::commands::{CommandResult, EditorCommand};
4use crate::core::{EditorDocument, Position, Range, Result};
5
6#[cfg(not(feature = "std"))]
7use alloc::string::ToString;
8
9/// Command to clear all embedded fonts from the ASS document
10///
11/// Removes the entire `[Fonts]` section if it exists.
12#[derive(Debug, Clone, PartialEq, Eq)]
13pub struct ClearFontsCommand;
14
15impl ClearFontsCommand {
16    /// Create a new clear fonts command
17    pub fn new() -> Self {
18        Self
19    }
20}
21
22impl Default for ClearFontsCommand {
23    fn default() -> Self {
24        Self::new()
25    }
26}
27
28impl EditorCommand for ClearFontsCommand {
29    fn execute(&self, document: &mut EditorDocument) -> Result<CommandResult> {
30        let content = document.text().to_string();
31
32        // Find [Fonts] section
33        if let Some(fonts_section) = content.find("[Fonts]") {
34            let header_end = content[fonts_section..]
35                .find('\n')
36                .map(|pos| fonts_section + pos + 1)
37                .unwrap_or(fonts_section + "[Fonts]".len());
38
39            let section_end = content[fonts_section..]
40                .find("\n[")
41                .map(|pos| fonts_section + pos)
42                .unwrap_or(content.len());
43
44            if section_end > header_end {
45                let range = Range::new(Position::new(header_end), Position::new(section_end));
46                document.delete(range)?;
47
48                return Ok(CommandResult::success_with_change(
49                    Range::new(Position::new(header_end), Position::new(header_end)),
50                    Position::new(header_end),
51                ));
52            }
53        }
54
55        Ok(CommandResult::success())
56    }
57
58    fn description(&self) -> &str {
59        "Clear all fonts"
60    }
61
62    fn memory_usage(&self) -> usize {
63        core::mem::size_of::<Self>()
64    }
65}
66
67/// Command to clear all embedded graphics from the ASS document
68///
69/// Removes the entire `[Graphics]` section if it exists.
70#[derive(Debug, Clone, PartialEq, Eq)]
71pub struct ClearGraphicsCommand;
72
73impl ClearGraphicsCommand {
74    /// Create a new clear graphics command
75    pub fn new() -> Self {
76        Self
77    }
78}
79
80impl Default for ClearGraphicsCommand {
81    fn default() -> Self {
82        Self::new()
83    }
84}
85
86impl EditorCommand for ClearGraphicsCommand {
87    fn execute(&self, document: &mut EditorDocument) -> Result<CommandResult> {
88        let content = document.text().to_string();
89
90        // Find [Graphics] section
91        if let Some(graphics_section) = content.find("[Graphics]") {
92            let header_end = content[graphics_section..]
93                .find('\n')
94                .map(|pos| graphics_section + pos + 1)
95                .unwrap_or(graphics_section + "[Graphics]".len());
96
97            let section_end = content[graphics_section..]
98                .find("\n[")
99                .map(|pos| graphics_section + pos)
100                .unwrap_or(content.len());
101
102            if section_end > header_end {
103                let range = Range::new(Position::new(header_end), Position::new(section_end));
104                document.delete(range)?;
105
106                return Ok(CommandResult::success_with_change(
107                    Range::new(Position::new(header_end), Position::new(header_end)),
108                    Position::new(header_end),
109                ));
110            }
111        }
112
113        Ok(CommandResult::success())
114    }
115
116    fn description(&self) -> &str {
117        "Clear all graphics"
118    }
119
120    fn memory_usage(&self) -> usize {
121        core::mem::size_of::<Self>()
122    }
123}
ass_editor/commands/fonts_graphics_commands/clear.rs

ass_editor/commands/fonts_graphics_commands/
clear.rs
