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Overview
| Comment: | Update comments on the fossildelta extension. No changes to code. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
9da4fb59b28686630d63a79988b45872 |
| User & Date: | drh 2019-02-25 14:52:43.832 |
Context
|
2019-02-25
| ||
| 18:43 | Enhance the command-line shell to accept bound parameters, using the TEMP table named "$Parameters" to look up the values for bound parameters. (check-in: 7c941ce5bc user: drh tags: trunk) | |
| 18:07 | Merge latest trunk changes into this branch. (check-in: 5c1cf30859 user: dan tags: reuse-schema) | |
| 14:52 | Update comments on the fossildelta extension. No changes to code. (check-in: 9da4fb59b2 user: drh tags: trunk) | |
| 14:16 | Fix a typo in the documentation for sqlite3_total_changes(). (check-in: 8474c1560e user: drh tags: trunk) | |
Changes
Changes to ext/misc/fossildelta.c.
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}
}
/* ERROR: unterminated delta */
return -1;
}
/*
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}
}
/* ERROR: unterminated delta */
return -1;
}
/*
** SQL functions: delta_create(X,Y)
**
** Return a delta for carrying X into Y.
*/
static void deltaCreateFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
|
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}else{
sqlite3_result_blob(context, aOut, nOut, sqlite3_free);
}
}
}
/*
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}else{
sqlite3_result_blob(context, aOut, nOut, sqlite3_free);
}
}
}
/*
** SQL functions: delta_apply(X,D)
**
** Return the result of applying delta D to input X.
*/
static void deltaApplyFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
|
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sqlite3_result_blob(context, aOut, nOut, sqlite3_free);
}
}
}
/*
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sqlite3_result_blob(context, aOut, nOut, sqlite3_free);
}
}
}
/*
** SQL functions: delta_output_size(D)
**
** Return the size of the output that results from applying delta D.
*/
static void deltaOutputSizeFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
|
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sqlite3_result_error(context, "corrupt fossil delta", -1);
return;
}else{
sqlite3_result_int(context, nOut);
}
}
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sqlite3_result_error(context, "corrupt fossil delta", -1);
return;
}else{
sqlite3_result_int(context, nOut);
}
}
/*****************************************************************************
** Table-valued SQL function: delta_parse(DELTA)
**
** Schema:
**
** CREATE TABLE delta_parse(
** op TEXT,
** a1 INT,
** a2 ANY,
** delta HIDDEN BLOB
** );
**
** Given an input DELTA, this function parses the delta and returns
** rows for each entry in the delta. The op column has one of the
** values SIZE, COPY, INSERT, CHECKSUM, ERROR.
**
** Assuming no errors, the first row has op='SIZE'. a1 is the size of
** the output in bytes and a2 is NULL.
**
** After the initial SIZE row, there are zero or more 'COPY' and/or 'INSERT'
** rows. A COPY row means content is copied from the source into the
** output. Column a1 is the number of bytes to copy and a2 is the offset
** into source from which to begin copying. An INSERT row means to
** insert text into the output stream. Column a1 is the number of bytes
** to insert and column is a BLOB that contains the text to be inserted.
**
** The last row of a well-formed delta will have an op value of 'CHECKSUM'.
** The a1 column will be the value of the checksum and a2 will be NULL.
**
** If the input delta is not well-formed, then a row with an op value
** of 'ERROR' is returned. The a1 value of the ERROR row is the offset
** into the delta where the error was encountered and a2 is NULL.
*/
typedef struct deltaparsevtab_vtab deltaparsevtab_vtab;
typedef struct deltaparsevtab_cursor deltaparsevtab_cursor;
struct deltaparsevtab_vtab {
sqlite3_vtab base; /* Base class - must be first */
/* No additional information needed */
};
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