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
|
#ifndef READXL_CELLTYPE_
#define READXL_CELLTYPE_
#include <Rcpp.h>
#include <libxls/xls.h>
enum CellType {
CELL_BLANK,
CELL_DATE,
CELL_NUMERIC,
CELL_TEXT
};
bool inline isDateTime(int id, const std::set<int> custom);
inline std::vector<CellType> cellTypes(Rcpp::CharacterVector x) {
std::vector<CellType> types;
types.reserve(x.size());
for (int i = 0; i < x.size(); ++i) {
std::string type(x[i]);
if (type == "blank") {
types.push_back(CELL_BLANK);
} else if (type == "date") {
types.push_back(CELL_DATE);
} else if (type == "numeric") {
types.push_back(CELL_NUMERIC);
} else if (type == "text") {
types.push_back(CELL_TEXT);
} else {
Rcpp::warning("Unknown type '%s' at position %i. Using text instead.",
type, i + 1);
}
}
return types;
}
inline std::string cellTypeDesc(CellType type) {
switch(type) {
case CELL_BLANK: return "blank";
case CELL_DATE: return "date";
case CELL_NUMERIC: return "numeric";
case CELL_TEXT: return "text";
}
return "???";
}
inline CellType cellType(xls::st_cell::st_cell_data cell, xls::st_xf* styles,
const std::set<int>& customDateFormats,
std::string na = "") {
// Find codes in [MS-XLS] S2.3.2 (p175).
// See xls_addCell for those used for cells
switch(cell.id) {
case 253: // LabelSst
case 516: // Label
return (na.compare((char*) cell.str) == 0) ? CELL_BLANK : CELL_TEXT;
break;
case 6: // formula
case 1030: // formula (Apple Numbers Bug)
if (cell.l == 0) {
return CELL_NUMERIC;
} else {
if (na.compare((char*) cell.str) == 0) {
return CELL_BLANK;
} else {
return CELL_TEXT;
}
}
break;
case 189: // MulRk
case 515: // Number
case 638: // Rk
{
if (styles == NULL)
return CELL_NUMERIC;
int format = styles->xf[cell.xf].format;
return isDateTime(format, customDateFormats) ? CELL_DATE : CELL_NUMERIC;
}
break;
case 190: // MulBlank
case 513: // Blank
return CELL_BLANK;
break;
default:
Rcpp::Rcout << "Unknown type: " << cell.id << "\n";
return CELL_NUMERIC;
}
}
bool inline isDateTime(int id, const std::set<int> custom) {
// Date formats:
// ECMA-376 (http://www.ecma-international.org/publications/standards/Ecma-376.htm)
// 18.8.30 numFmt (Number Format) (p1777)
// Date times: 14-22, 27-36, 45-47, 50-58, 71-81 (inclusive)
if ((id >= 14 && id <= 22) ||
(id >= 27 && id <= 36) ||
(id >= 45 && id <= 47) ||
(id >= 50 && id <= 58) ||
(id >= 71 && id <= 81))
return true;
// Built-in format that's not a date
if (id < 164)
return false;
return custom.count(id) > 0;
}
inline bool isDateFormat(std::string x) {
for (size_t i = 0; i < x.size(); ++i) {
switch (x[i]) {
case 'd':
case 'm': // 'mm' for minutes
case 'y':
case 'h': // 'hh'
case 's': // 'ss'
return true;
default:
break;
}
}
return false;
}
inline Rcpp::RObject makeCol(CellType type, int n) {
switch(type) {
case CELL_BLANK:
return R_NilValue;
case CELL_DATE: {
Rcpp::RObject col = Rcpp::NumericVector(n, NA_REAL);
col.attr("class") = Rcpp::CharacterVector::create("POSIXct", "POSIXt");
col.attr("tzone") = "UTC";
return col;
}
break;
case CELL_NUMERIC:
return Rcpp::NumericVector(n, NA_REAL);
break;
case CELL_TEXT:
return Rcpp::CharacterVector(n, NA_STRING);
break;
}
return R_NilValue;
}
// Make data frame from list of columns, dropping blanks
inline Rcpp::List colDataframe(Rcpp::List cols, Rcpp::CharacterVector names,
std::vector<CellType> types) {
int p = cols.size();
int p_out = 0;
for (int j = 0; j < p; ++j) {
if (types[j] != CELL_BLANK)
p_out++;
}
Rcpp::List out(p_out);
Rcpp::CharacterVector names_out(p_out);
int j_out = 0;
for (int j = 0; j < p; ++j) {
if (types[j] == CELL_BLANK)
continue;
out[j_out] = cols[j];
names_out[j_out] = names[j];
j_out++;
}
// Turn list into a data frame
int n = (p_out == 0) ? 0 : Rf_length(out[0]);
out.attr("class") = Rcpp::CharacterVector::create("tbl_df", "tbl", "data.frame");
out.attr("row.names") = Rcpp::IntegerVector::create(NA_INTEGER, -n);
out.attr("names") = names_out;
return out;
}
#endif
|
