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
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
/// Configuration parameters for PDF table extraction.
///
/// This struct defines the extraction behaviors, coordinates for column boundaries,
/// vertical row clustering tolerance, trimming limits, and filters.
/// Usually constructed using [`ExtractionConfigBuilder`].
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ExtractionConfig {
/// X-coordinate column dividers, sorted in ascending order (values between 0.0 and 1.0 relative to page width)
pub col_guides: Vec<f64>,
/// Column purpose mappings corresponding to the divided columns (length should be col_guides.len() + 1)
pub col_mappings: Vec<String>,
/// Vertical distance tolerance (in points/pixels) for grouping words on the same line
pub y_tolerance: f64,
/// Merge lines that only have description text into the preceding row's description
pub merge_multi_line: bool,
/// Number of rows to skip at the beginning of the first page (e.g. table headers)
pub skip_header_rows: usize,
/// Number of rows to skip at the bottom of each page (e.g. running footers)
pub skip_footer_rows: usize,
/// Filter out rows that do not have a recognizable date in the mapped 'date' column
pub filter_only_date: bool,
/// Filter out rows that do not have a numerical amount in any mapped 'amount', 'debit', or 'credit' columns
pub filter_only_amount: bool,
/// Page top trim factor (0.0 to 1.0) - contents above this relative Y coordinate are excluded
pub y_top_trim: f64,
/// Page bottom trim factor (0.0 to 1.0) - contents below this relative Y coordinate are excluded
pub y_bottom_trim: f64,
/// Manual cell content overrides keyed by page number -> Y-coordinate (formatted) -> column index -> new value
pub manual_edits: HashMap<String, HashMap<String, HashMap<String, String>>>,
/// Manual row deletions keyed by page number -> Y-coordinate (formatted) -> is_deleted
pub deleted_rows: HashMap<String, HashMap<String, bool>>,
/// Optional password to decrypt the PDF document
pub password: Option<String>,
}
impl Default for ExtractionConfig {
fn default() -> Self {
Self {
col_guides: Vec::new(),
col_mappings: Vec::new(),
y_tolerance: 6.0,
merge_multi_line: true,
skip_header_rows: 0,
skip_footer_rows: 0,
filter_only_date: false,
filter_only_amount: false,
y_top_trim: 0.0,
y_bottom_trim: 1.0,
manual_edits: HashMap::new(),
deleted_rows: HashMap::new(),
password: None,
}
}
}
impl ExtractionConfig {
/// Returns a new [`ExtractionConfigBuilder`] instance.
pub fn builder() -> ExtractionConfigBuilder {
ExtractionConfigBuilder::new()
}
}
/// A builder helper for configuring and creating an [`ExtractionConfig`].
pub struct ExtractionConfigBuilder {
config: ExtractionConfig,
}
impl ExtractionConfigBuilder {
/// Creates a new `ExtractionConfigBuilder` with default configurations.
pub fn new() -> Self {
Self {
config: ExtractionConfig::default(),
}
}
/// Sets the horizontal column division guides (0.0 to 1.0 relative to page width).
/// These guides are automatically sorted in ascending order.
pub fn col_guides(mut self, guides: Vec<f64>) -> Self {
self.config.col_guides = guides;
self.config
.col_guides
.sort_by(|a, b| a.partial_cmp(b).unwrap_or(std::cmp::Ordering::Equal));
self
}
/// Sets the column mapping labels corresponding to the divided columns.
/// The length of mappings must be equal to `col_guides.len() + 1`.
pub fn col_mappings(mut self, mappings: Vec<String>) -> Self {
self.config.col_mappings = mappings;
self
}
/// Sets the vertical distance tolerance (in points/pixels) for grouping words on the same row line.
pub fn y_tolerance(mut self, tolerance: f64) -> Self {
self.config.y_tolerance = tolerance;
self
}
/// Configures whether to merge description-only lines into the preceding transaction row's description.
pub fn merge_multi_line(mut self, merge: bool) -> Self {
self.config.merge_multi_line = merge;
self
}
/// Sets the number of rows to skip at the top of the first page (useful for skipping main statement headers).
pub fn skip_header_rows(mut self, count: usize) -> Self {
self.config.skip_header_rows = count;
self
}
/// Sets the number of rows to skip at the bottom of each page (useful for skipping page numbers and footers).
pub fn skip_footer_rows(mut self, count: usize) -> Self {
self.config.skip_footer_rows = count;
self
}
/// Configures whether to filter out rows that don't have a valid date in the mapped `date` column.
pub fn filter_only_date(mut self, filter: bool) -> Self {
self.config.filter_only_date = filter;
self
}
/// Configures whether to filter out rows that don't have an amount in any mapped `amount`, `debit`, or `credit` columns.
pub fn filter_only_amount(mut self, filter: bool) -> Self {
self.config.filter_only_amount = filter;
self
}
/// Sets the relative top margin for exclusion (0.0 to 1.0). Content above this is ignored.
pub fn y_top_trim(mut self, trim: f64) -> Self {
self.config.y_top_trim = trim;
self
}
/// Sets the relative bottom margin for exclusion (0.0 to 1.0). Content below this is ignored.
pub fn y_bottom_trim(mut self, trim: f64) -> Self {
self.config.y_bottom_trim = trim;
self
}
/// Applies manual cell content edits/overrides.
pub fn manual_edits(
mut self,
edits: HashMap<String, HashMap<String, HashMap<String, String>>>,
) -> Self {
self.config.manual_edits = edits;
self
}
/// Applies manual row deletions.
pub fn deleted_rows(mut self, deleted: HashMap<String, HashMap<String, bool>>) -> Self {
self.config.deleted_rows = deleted;
self
}
/// Sets the decryption password for the PDF document.
pub fn password(mut self, password: Option<String>) -> Self {
self.config.password = password;
self
}
/// Builds and returns the configured [`ExtractionConfig`].
pub fn build(self) -> ExtractionConfig {
self.config
}
}