mirror of https://github.com/citusdata/citus.git
61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
/*
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* csql - the CitusDB interactive terminal
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* copy_options.h
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* Shared declarations for parsing copy and stage meta-commands. The stage
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* meta-command borrows from copy's syntax, but does not yet support
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* outputting table data to a file. Further, the stage command reuses copy's
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* declarations to maintain compatibility with the copy command.
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*
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* Copyright (c) 2012, Citus Data, Inc.
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*
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* $Id$
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*/
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#ifndef COPY_OPTIONS_H
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#define COPY_OPTIONS_H
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#include "libpq-fe.h"
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/*
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* The documented syntax is:
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* \copy tablename [(columnlist)] from|to filename [options]
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* \copy ( select stmt ) to filename [options]
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*
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* where 'filename' can be one of the following:
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* '<file path>' | PROGRAM '<command>' | stdin | stdout | pstdout | pstdout
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*
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* An undocumented fact is that you can still write BINARY before the
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* tablename; this is a hangover from the pre-7.3 syntax. The options
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* syntax varies across backend versions, but we avoid all that mess
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* by just transmitting the stuff after the filename literally.
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*
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* table name can be double-quoted and can have a schema part.
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* column names can be double-quoted.
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* filename can be single-quoted like SQL literals.
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* command must be single-quoted like SQL literals.
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*
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* returns a malloc'ed structure with the options, or NULL on parsing error
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*/
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typedef struct copy_options
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{
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char *before_tofrom; /* COPY string before TO/FROM */
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char *after_tofrom; /* COPY string after TO/FROM filename */
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char *file; /* NULL = stdin/stdout */
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bool program; /* is 'file' a program to popen? */
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bool psql_inout; /* true = use psql stdin/stdout */
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bool from; /* true = FROM, false = TO */
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char *tableName; /* table name to stage data to */
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char *columnList; /* optional column list used in staging */
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} copy_options;
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/* Function declarations for parsing and freeing copy options */
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copy_options * parse_slash_copy(const char *args);
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void free_copy_options(copy_options * ptr);
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copy_options * ParseStageOptions(copy_options *copyOptions);
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#endif /* COPY_OPTIONS_H */
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