Input Files
-
structure for handling input files
2
@Add(includes)
#include <iostream>
#include <vector>
#include <filesystem>
@End(includes)
3
@Add(inputs elements)
auto &cur() {
ASSERT (! open_.empty());
return open_.back();
}
auto &cur_input() {
return used_.find(cur().path())->second;
}
@End(inputs elements)
-
last opened open input file
4
@Add(inputs elements)
auto begin() {
return used_.begin();
}
@End(inputs elements)
-
begin iterator for used input files
5
@Add(inputs elements)
auto end() {
return used_.end();
}
@End(inputs elements)
-
end iterator for used input files
6
@Add(inputs elements)
auto size() const {
return used_.size();
}
@End(inputs elements)
-
number of used input files
7
@Add(inputs elements)
void push(const std::string &path) {
std::string prev;
if (open_.size()) {
auto got { used_.find(open_.back().path()) };
if (got != used_.end()) {
prev = open_.back().path();
}
}
used_.insert(std::move(
std::map<std::string, Input>::value_type(path, Input(prev))
));
open_.emplace_back(path);
}
const std::string open_head() const {
ASSERT(! open_.empty());
return open_.back().path();
}
Input &operator[](const std::string &name) {
return used_[name];
}
@End(inputs elements)
-
open new input file
-
is recorded as used input file
8
@Add(inputs elements)
void add(const std::string &path) {
roots_.push_back(path);
push(path);
}
@End(inputs elements)
-
add a file to be processed
Get next line
-
reads next line from the current input file
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if the end is reached, the current input file in popped
-
and the line is read from the previous input file
10
@Add(inputs elements)
bool has(const std::string &name) const {
@put(has checks);
return false;
}
@End(inputs elements)
-
checks if the file is already used
11
@def(has checks)
if (used_.find(name) != used_.end()) {
return true;
}
@end(has checks)
-
iterate over
_used collection
Local Frags
-
each input file has a
Frag collection
Line Numbers
-
for each open input file the current line number is recorded
14
@Add(private open input els)
int line_ = 0;
@end(private open input els)
15
@Add(open input elements)
int line() const {
return line_;
}
@end(open input elements)
-
getter for current line number
16
@Def(line read)
++line_;
@End(line read)
-
increase line number for each line
17
@Def(clear inputs)
used_.clear();
open_.clear();
if (roots_.empty()) {
@put(populate default file);
}
current_path_ = roots_.begin();
@End(clear inputs)
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resets all open and used files
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if the
_paths are empty the default input file names will be used
18
@def(populate default file)
if (std::filesystem::exists("index.md")) {
roots_.push_back("index.md");
} else if (std::filesystem::exists("index.x")) {
roots_.push_back("index.x");
} else {
std::cerr << "no input paths\n";
roots_.push_back("index.md");
}
@end(populate default file)