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Unique file generation API for a given file name #27

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Unique file generation API for a given file name #27

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1804b13
Added unique name generation API
Dec 8, 2016
da78b20
Fixed Compiled failure(Missing ; )!!
Dec 8, 2016
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2 changes: 1 addition & 1 deletion keywords.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,7 @@ close KEYWORD2
seek KEYWORD2
position KEYWORD2
size KEYWORD2

getUniqueFileName KEYWORD2
#######################################
# Constants (LITERAL1)
#######################################
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10 changes: 10 additions & 0 deletions src/SD.cpp
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Expand Up @@ -569,6 +569,16 @@ boolean SDClass::remove(const char *filepath) {
return walkPath(filepath, root, callback_remove);
}

String SDClass::getUniqueFileName(String expectedName, String expectedExtention)
{
long counter = 0;
while (SD.exists(expectedName + String(counter) + "." + expectedExtention))
{
counter += 1;
}
return expectedName + String(counter) + "." + expectedExtention;
}


// allows you to recurse into a directory
File File::openNextFile(uint8_t mode) {
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3 changes: 3 additions & 0 deletions src/SD.h
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Expand Up @@ -92,6 +92,9 @@ class SDClass {
boolean rmdir(const char *filepath);
boolean rmdir(const String &filepath) { return rmdir(filepath.c_str()); }

//returns a unique name for the file with expectedfilename an extention.
String getUniqueFileName(String expectedName, String expectedExtention);

private:

// This is used to determine the mode used to open a file
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