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#include "fastfetch.h"
#include "common/properties.h"
#include "common/io.h"
#include "common/mallocHelper.h"
#include <stdlib.h>
#include <ctype.h>
#ifdef _WIN32
#include "common/windows/getline.h"
#endif
bool ffParsePropLinePointer(const char** line, const char* start, FFstrbuf* buffer) {
if (**line == '\0') {
return false;
}
// Skip any amount of whitespace at the begin of line
while (**line == ' ' || **line == '\t') {
++(*line);
}
while (*start != '\0') {
// Any amount of whitespace in the format string matches any amount of whitespace in the line, even none
if (*start == ' ' || *start == '\t') {
while (*start == ' ' || *start == '\t') {
++start;
}
while (**line == ' ' || **line == '\t') {
++(*line);
}
continue;
}
// Line doesn't match start, skip it
if (tolower(**line) != tolower(*start) || **line == '\0') {
return false;
}
// Line and start match, continue testing
++(*line);
++start;
}
char valueEnd = '\n';
// Allow faster parsing of XML
if (*(*line - 1) == '>') {
valueEnd = '<';
}
// Skip any amount of whitespace at the begin of the value
while (**line == ' ' || **line == '\t') {
++(*line);
}
// Allow faster parsing of quoted values
if (**line == '"' || **line == '\'') {
valueEnd = **line;
++(*line);
}
// Copy the value to the buffer
while (**line != valueEnd && **line != '\n' && **line != '\0') {
ffStrbufAppendC(buffer, **line);
++(*line);
}
ffStrbufTrimRight(buffer, ' ');
return true;
}
bool ffParsePropLines(const char* lines, const char* start, FFstrbuf* buffer) {
while (!ffParsePropLinePointer(&lines, start, buffer)) {
while (*lines != '\0' && *lines != '\n') {
++lines;
}
if (*lines == '\0') {
return false;
}
// Skip '\n'
++lines;
}
return true;
}
// The following functions return true if the file was found, independently if start was found
// Buffers which already contain content are not overwritten
// The last occurrence of start in the first file will be the one used
bool ffParsePropFileValues(const char* filename, uint32_t numQueries, FFpropquery* queries) {
FF_AUTO_CLOSE_FILE FILE* file = fopen(filename, "r");
if (file == NULL) {
return false;
}
bool valueStorage[32];
bool* unsetValues = valueStorage;
if (numQueries > ARRAY_SIZE(valueStorage)) {
unsetValues = malloc(sizeof(bool) * numQueries);
}
bool allSet = true;
for (uint32_t i = 0; i < numQueries; i++) {
unsetValues[i] = queries[i].buffer->length == 0;
if (unsetValues[i]) {
allSet = false;
}
}
if (!allSet) {
FF_AUTO_FREE char* line = NULL;
size_t len = 0;
while (getline(&line, &len, file) != -1) {
for (uint32_t i = 0; i < numQueries; i++) {
if (!unsetValues[i]) {
continue;
}
uint32_t currentLength = queries[i].buffer->length;
queries[i].buffer->length = 0;
if (!ffParsePropLine(line, queries[i].start, queries[i].buffer)) {
queries[i].buffer->length = currentLength;
}
}
}
}
if (unsetValues != valueStorage) {
free(unsetValues);
}
return true;
}
bool ffParsePropFileHomeValues(const char* relativeFile, uint32_t numQueries, FFpropquery* queries) {
FF_STRBUF_AUTO_DESTROY absolutePath = ffStrbufCreateF("%s/%s", instance.state.platform.homeDir.chars, relativeFile);
return ffParsePropFileValues(absolutePath.chars, numQueries, queries);
}
bool ffParsePropFileListValues(const FFlist* list, const char* relativeFile, uint32_t numQueries, FFpropquery* queries) {
bool foundAFile = false;
FF_LIST_FOR_EACH (FFstrbuf, dirPrefix, *list) {
const uint32_t dirPrefixLength = dirPrefix->length;
ffStrbufAppendS(dirPrefix, relativeFile);
if (ffParsePropFileValues(dirPrefix->chars, numQueries, queries)) {
foundAFile = true;
}
ffStrbufSubstrBefore(dirPrefix, dirPrefixLength);
bool allSet = true;
for (uint32_t k = 0; k < numQueries; k++) {
if (queries[k].buffer->length == 0) {
allSet = false;
break;
}
}
if (allSet) {
break;
}
}
return foundAFile;
}
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