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doc: explain MAX_COMPONENT_LEN #72

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Apr 17, 2022
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doc: explain MAX_COMPONENT_LEN #72

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8 changes: 5 additions & 3 deletions src/SD.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -54,9 +54,11 @@

namespace SDLib {

// Used by `getNextPathComponent`
#define MAX_COMPONENT_LEN 12 // What is max length?
#define PATH_COMPONENT_BUFFER_LEN MAX_COMPONENT_LEN+1
// Used by `getNextPathComponent`
#define MAX_COMPONENT_LEN 12
#define PATH_COMPONENT_BUFFER_LEN (MAX_COMPONENT_LEN + 1)
// BASENAME:char(8) + '.':char(1) + EXT:char(3) = 12 (a.k.a short 8.3 name)
// And an extra space for '\0' for path buffer

bool getNextPathComponent(const char *path, unsigned int *p_offset,
char *buffer) {
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