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Optimize lsDive logic

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This commit is contained in:
Scott Lahteine 2015-07-16 12:42:57 -07:00 committed by Richard Wackerbarth
parent 417706e578
commit 944090c19c
1 changed files with 2 additions and 9 deletions
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11
Marlin/cardreader.cpp
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@ -62,20 +62,13 @@ void CardReader::lsDive(const char *prepend, SdFile parent, const char * const m
// Allocate enough stack space for the full path to a folder, trailing slash, and nul
boolean prepend_is_empty = (prepend[0] == '\0');
int len = strlen(prepend) + (prepend_is_empty ? 1 : 0) + strlen(lfilename) + 1 + 1;
int len = (prepend_is_empty ? 1 : strlen(prepend)) + strlen(lfilename) + 1 + 1;
char path[len];
// Append the FOLDERNAME12/ to the passed string.
// It contains the full path to the "parent" argument.
// We now have the full path to the item in this folder.
if (prepend_is_empty) {
path[0] = '/'; // a root slash if prepend is empty
path[1] = '\0';
}
else
path[0] = '\0';
strcat(path, prepend); // 1 character minimum
strcpy(path, prepend_is_empty ? "/" : prepend); // root slash if prepend is empty
strcat(path, lfilename); // FILENAME_LENGTH-1 characters maximum
strcat(path, "/"); // 1 character