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pgindent run before PG 9.1 beta 1.

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This commit is contained in:
Bruce Momjian
2011-04-10 11:42:00 -04:00
parent 9a8b73147c
commit bf50caf105
446 changed files with 5737 additions and 5258 deletions
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91
contrib/fuzzystrmatch/levenshtein.c
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@ -23,7 +23,7 @@
*/
#ifdef LEVENSHTEIN_LESS_EQUAL
static int levenshtein_less_equal_internal(text *s, text *t,
int ins_c, int del_c, int sub_c, int max_d);
int ins_c, int del_c, int sub_c, int max_d);
#else
static int levenshtein_internal(text *s, text *t,
int ins_c, int del_c, int sub_c);
@ -50,7 +50,7 @@ static int levenshtein_internal(text *s, text *t,
* array.
*
* If max_d >= 0, we only need to provide an accurate answer when that answer
* is less than or equal to the bound. From any cell in the matrix, there is
* is less than or equal to the bound. From any cell in the matrix, there is
* theoretical "minimum residual distance" from that cell to the last column
* of the final row. This minimum residual distance is zero when the
* untransformed portions of the strings are of equal length (because we might
@ -87,11 +87,13 @@ levenshtein_internal(text *s, text *t,
/*
* For levenshtein_less_equal_internal, we have real variables called
* start_column and stop_column; otherwise it's just short-hand for 0
* and m.
* start_column and stop_column; otherwise it's just short-hand for 0 and
* m.
*/
#ifdef LEVENSHTEIN_LESS_EQUAL
int start_column, stop_column;
int start_column,
stop_column;
#undef START_COLUMN
#undef STOP_COLUMN
#define START_COLUMN start_column
@ -139,16 +141,16 @@ levenshtein_internal(text *s, text *t,
stop_column = m + 1;
/*
* If max_d >= 0, determine whether the bound is impossibly tight. If so,
* If max_d >= 0, determine whether the bound is impossibly tight. If so,
* return max_d + 1 immediately. Otherwise, determine whether it's tight
* enough to limit the computation we must perform. If so, figure out
* initial stop column.
*/
if (max_d >= 0)
{
int min_theo_d; /* Theoretical minimum distance. */
int max_theo_d; /* Theoretical maximum distance. */
int net_inserts = n - m;
int min_theo_d; /* Theoretical minimum distance. */
int max_theo_d; /* Theoretical maximum distance. */
int net_inserts = n - m;
min_theo_d = net_inserts < 0 ?
-net_inserts * del_c : net_inserts * ins_c;
@ -162,20 +164,20 @@ levenshtein_internal(text *s, text *t,
else if (ins_c + del_c > 0)
{
/*
* Figure out how much of the first row of the notional matrix
* we need to fill in. If the string is growing, the theoretical
* Figure out how much of the first row of the notional matrix we
* need to fill in. If the string is growing, the theoretical
* minimum distance already incorporates the cost of deleting the
* number of characters necessary to make the two strings equal
* in length. Each additional deletion forces another insertion,
* so the best-case total cost increases by ins_c + del_c.
* If the string is shrinking, the minimum theoretical cost
* assumes no excess deletions; that is, we're starting no futher
* right than column n - m. If we do start further right, the
* best-case total cost increases by ins_c + del_c for each move
* right.
* number of characters necessary to make the two strings equal in
* length. Each additional deletion forces another insertion, so
* the best-case total cost increases by ins_c + del_c. If the
* string is shrinking, the minimum theoretical cost assumes no
* excess deletions; that is, we're starting no futher right than
* column n - m. If we do start further right, the best-case
* total cost increases by ins_c + del_c for each move right.
*/
int slack_d = max_d - min_theo_d;
int best_column = net_inserts < 0 ? -net_inserts : 0;
int slack_d = max_d - min_theo_d;
int best_column = net_inserts < 0 ? -net_inserts : 0;
stop_column = best_column + (slack_d / (ins_c + del_c)) + 1;
if (stop_column > m)
stop_column = m + 1;
@ -185,15 +187,15 @@ levenshtein_internal(text *s, text *t,
/*
* In order to avoid calling pg_mblen() repeatedly on each character in s,
* we cache all the lengths before starting the main loop -- but if all the
* characters in both strings are single byte, then we skip this and use
* a fast-path in the main loop. If only one string contains multi-byte
* characters, we still build the array, so that the fast-path needn't
* deal with the case where the array hasn't been initialized.
* we cache all the lengths before starting the main loop -- but if all
* the characters in both strings are single byte, then we skip this and
* use a fast-path in the main loop. If only one string contains
* multi-byte characters, we still build the array, so that the fast-path
* needn't deal with the case where the array hasn't been initialized.
*/
if (m != s_bytes || n != t_bytes)
{
int i;
int i;
const char *cp = s_data;
s_char_len = (int *) palloc((m + 1) * sizeof(int));
@ -214,8 +216,8 @@ levenshtein_internal(text *s, text *t,
curr = prev + m;
/*
* To transform the first i characters of s into the first 0 characters
* of t, we must perform i deletions.
* To transform the first i characters of s into the first 0 characters of
* t, we must perform i deletions.
*/
for (i = START_COLUMN; i < STOP_COLUMN; i++)
prev[i] = i * del_c;
@ -228,6 +230,7 @@ levenshtein_internal(text *s, text *t,
int y_char_len = n != t_bytes + 1 ? pg_mblen(y) : 1;
#ifdef LEVENSHTEIN_LESS_EQUAL
/*
* In the best case, values percolate down the diagonal unchanged, so
* we must increment stop_column unless it's already on the right end
@ -241,10 +244,10 @@ levenshtein_internal(text *s, text *t,
}
/*
* The main loop fills in curr, but curr[0] needs a special case:
* to transform the first 0 characters of s into the first j
* characters of t, we must perform j insertions. However, if
* start_column > 0, this special case does not apply.
* The main loop fills in curr, but curr[0] needs a special case: to
* transform the first 0 characters of s into the first j characters
* of t, we must perform j insertions. However, if start_column > 0,
* this special case does not apply.
*/
if (start_column == 0)
{
@ -285,7 +288,7 @@ levenshtein_internal(text *s, text *t,
*/
ins = prev[i] + ins_c;
del = curr[i - 1] + del_c;
if (x[x_char_len-1] == y[y_char_len-1]
if (x[x_char_len - 1] == y[y_char_len - 1]
&& x_char_len == y_char_len &&
(x_char_len == 1 || rest_of_char_same(x, y, x_char_len)))
sub = prev[i - 1];
@ -331,6 +334,7 @@ levenshtein_internal(text *s, text *t,
y += y_char_len;
#ifdef LEVENSHTEIN_LESS_EQUAL
/*
* This chunk of code represents a significant performance hit if used
* in the case where there is no max_d bound. This is probably not
@ -348,15 +352,16 @@ levenshtein_internal(text *s, text *t,
* string, so we want to find the value for zp where where (n - 1)
* - j = (m - 1) - zp.
*/
int zp = j - (n - m);
int zp = j - (n - m);
/* Check whether the stop column can slide left. */
while (stop_column > 0)
{
int ii = stop_column - 1;
int net_inserts = ii - zp;
int ii = stop_column - 1;
int net_inserts = ii - zp;
if (prev[ii] + (net_inserts > 0 ? net_inserts * ins_c :
-net_inserts * del_c) <= max_d)
-net_inserts * del_c) <= max_d)
break;
stop_column--;
}
@ -364,14 +369,16 @@ levenshtein_internal(text *s, text *t,
/* Check whether the start column can slide right. */
while (start_column < stop_column)
{
int net_inserts = start_column - zp;
int net_inserts = start_column - zp;
if (prev[start_column] +
(net_inserts > 0 ? net_inserts * ins_c :
-net_inserts * del_c) <= max_d)
-net_inserts * del_c) <= max_d)
break;
/*
* We'll never again update these values, so we must make
* sure there's nothing here that could confuse any future
* We'll never again update these values, so we must make sure
* there's nothing here that could confuse any future
* iteration of the outer loop.
*/
prev[start_column] = max_d + 1;