1d73b52f5b
Intern strings so they can be compared by address and stored without wasting space. This library uses the macros in the obj_pool.h and trp.h to create a memory pool for strings and expose an API for handling them. [rr: added API docs] [jn: with some API simplifications, new documentation and tests] Signed-off-by: David Barr <david.barr@cordelta.com> Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
44 lines
1.2 KiB
Plaintext
44 lines
1.2 KiB
Plaintext
string_pool API
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===============
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The string_pool API provides facilities for replacing strings
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with integer keys that can be more easily compared and stored.
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The facilities are designed so that one could teach Git without
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too much trouble to store the information needed for these keys to
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remain valid over multiple executions.
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Functions
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---------
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pool_intern::
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Include a string in the string pool and get its key.
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If that string is already in the pool, retrieves its
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existing key.
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pool_fetch::
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Retrieve the string associated to a given key.
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pool_tok_r::
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Extract the key of the next token from a string.
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Interface mimics strtok_r.
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pool_print_seq::
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Print a sequence of strings named by key to a file, using the
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specified delimiter to separate them.
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If NULL (key ~0) appears in the sequence, the sequence ends
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early.
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pool_tok_seq::
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Split a string into tokens, storing the keys of segments
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into a caller-provided array.
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Unless sz is 0, the array will always be ~0-terminated.
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If there is not enough room for all the tokens, the
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array holds as many tokens as fit in the entries before
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the terminating ~0. Return value is the index after the
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last token, or sz if the tokens did not fit.
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pool_reset::
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Deallocate storage for the string pool.
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