forked from nushell/nushell
-
Notifications
You must be signed in to change notification settings - Fork 0
/
ods.rs
209 lines (180 loc) · 5.89 KB
/
ods.rs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
use calamine::*;
use indexmap::map::IndexMap;
use nu_engine::CallExt;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
Category, Example, PipelineData, ShellError, Signature, Span, SyntaxShape, Type, Value,
};
use std::io::Cursor;
#[derive(Clone)]
pub struct FromOds;
impl Command for FromOds {
fn name(&self) -> &str {
"from ods"
}
fn signature(&self) -> Signature {
Signature::build("from ods")
.input_output_types(vec![(Type::String, Type::Table(vec![]))])
.allow_variants_without_examples(true)
.named(
"sheets",
SyntaxShape::List(Box::new(SyntaxShape::String)),
"Only convert specified sheets",
Some('s'),
)
.category(Category::Formats)
}
fn usage(&self) -> &str {
"Parse OpenDocument Spreadsheet(.ods) data and create table."
}
fn run(
&self,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: PipelineData,
) -> Result<nu_protocol::PipelineData, ShellError> {
let head = call.head;
let sel_sheets = if let Some(Value::List { vals: columns, .. }) =
call.get_flag(engine_state, stack, "sheets")?
{
convert_columns(columns.as_slice(), call.head)?
} else {
vec![]
};
from_ods(input, head, sel_sheets)
}
fn examples(&self) -> Vec<Example> {
vec![
Example {
description: "Convert binary .ods data to a table",
example: "open --raw test.ods | from ods",
result: None,
},
Example {
description: "Convert binary .ods data to a table, specifying the tables",
example: "open --raw test.ods | from ods -s [Spreadsheet1]",
result: None,
},
]
}
}
fn convert_columns(columns: &[Value], span: Span) -> Result<Vec<String>, ShellError> {
let res = columns
.iter()
.map(|value| match &value {
Value::String { val: s, .. } => Ok(s.clone()),
_ => Err(ShellError::IncompatibleParametersSingle(
"Incorrect column format, Only string as column name".to_string(),
value.span().unwrap_or(span),
)),
})
.collect::<Result<Vec<String>, _>>()?;
Ok(res)
}
fn collect_binary(input: PipelineData, span: Span) -> Result<Vec<u8>, ShellError> {
let mut bytes = vec![];
let mut values = input.into_iter();
loop {
match values.next() {
Some(Value::Binary { val: b, .. }) => {
bytes.extend_from_slice(&b);
}
Some(x) => {
return Err(ShellError::UnsupportedInput(
"Expected binary from pipeline".to_string(),
x.span().unwrap_or(span),
))
}
None => break,
}
}
Ok(bytes)
}
fn from_ods(
input: PipelineData,
head: Span,
sel_sheets: Vec<String>,
) -> Result<PipelineData, ShellError> {
let bytes = collect_binary(input, head)?;
let buf: Cursor<Vec<u8>> = Cursor::new(bytes);
let mut ods = Ods::<_>::new(buf)
.map_err(|_| ShellError::UnsupportedInput("Could not load ods file".to_string(), head))?;
let mut dict = IndexMap::new();
let mut sheet_names = ods.sheet_names().to_owned();
if !sel_sheets.is_empty() {
sheet_names.retain(|e| sel_sheets.contains(e));
}
for sheet_name in &sheet_names {
let mut sheet_output = vec![];
if let Some(Ok(current_sheet)) = ods.worksheet_range(sheet_name) {
for row in current_sheet.rows() {
let mut row_output = IndexMap::new();
for (i, cell) in row.iter().enumerate() {
let value = match cell {
DataType::Empty => Value::nothing(head),
DataType::String(s) => Value::string(s, head),
DataType::Float(f) => Value::Float {
val: *f,
span: head,
},
DataType::Int(i) => Value::Int {
val: *i,
span: head,
},
DataType::Bool(b) => Value::boolean(*b, head),
_ => Value::nothing(head),
};
row_output.insert(format!("column{}", i), value);
}
let (cols, vals) =
row_output
.into_iter()
.fold((vec![], vec![]), |mut acc, (k, v)| {
acc.0.push(k);
acc.1.push(v);
acc
});
let record = Value::Record {
cols,
vals,
span: head,
};
sheet_output.push(record);
}
dict.insert(
sheet_name,
Value::List {
vals: sheet_output,
span: head,
},
);
} else {
return Err(ShellError::UnsupportedInput(
"Could not load sheet".to_string(),
head,
));
}
}
let (cols, vals) = dict.into_iter().fold((vec![], vec![]), |mut acc, (k, v)| {
acc.0.push(k.clone());
acc.1.push(v);
acc
});
let record = Value::Record {
cols,
vals,
span: head,
};
Ok(PipelineData::Value(record, None))
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_examples() {
use crate::test_examples;
test_examples(FromOds {})
}
}