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tablespace.c

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    • Tom Lane's avatar
      220db7cc
      Simplify and standardize conversions between TEXT datums and ordinary C · 220db7cc
      Tom Lane authored
      strings.  This patch introduces four support functions cstring_to_text,
      cstring_to_text_with_len, text_to_cstring, and text_to_cstring_buffer, and
      two macros CStringGetTextDatum and TextDatumGetCString.  A number of
      existing macros that provided variants on these themes were removed.
      
      Most of the places that need to make such conversions now require just one
      function or macro call, in place of the multiple notational layers that used
      to be needed.  There are no longer any direct calls of textout or textin,
      and we got most of the places that were using handmade conversions via
      memcpy (there may be a few still lurking, though).
      
      This commit doesn't make any serious effort to eliminate transient memory
      leaks caused by detoasting toasted text objects before they reach
      text_to_cstring.  We changed PG_GETARG_TEXT_P to PG_GETARG_TEXT_PP in a few
      places where it was easy, but much more could be done.
      
      Brendan Jurd and Tom Lane
      220db7cc
      History
      Simplify and standardize conversions between TEXT datums and ordinary C
      Tom Lane authored
      strings.  This patch introduces four support functions cstring_to_text,
      cstring_to_text_with_len, text_to_cstring, and text_to_cstring_buffer, and
      two macros CStringGetTextDatum and TextDatumGetCString.  A number of
      existing macros that provided variants on these themes were removed.
      
      Most of the places that need to make such conversions now require just one
      function or macro call, in place of the multiple notational layers that used
      to be needed.  There are no longer any direct calls of textout or textin,
      and we got most of the places that were using handmade conversions via
      memcpy (there may be a few still lurking, though).
      
      This commit doesn't make any serious effort to eliminate transient memory
      leaks caused by detoasting toasted text objects before they reach
      text_to_cstring.  We changed PG_GETARG_TEXT_P to PG_GETARG_TEXT_PP in a few
      places where it was easy, but much more could be done.
      
      Brendan Jurd and Tom Lane