|
|
| version 1.17, 2004/01/30 07:30:40 | version 1.31, 2008/07/01 13:40:33 |
|---|---|
| Line 5 | Line 5 |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| 2001.07.30 using PgSQL 7.1.2 | 2007.10.25 using PgSQL 8.1.5 |
| */ | */ |
| static const char *RCSId="$Id$"; | static const char *RCSId="$Id$"; |
| Line 16 static const char *RCSId="$Id$"; | Line 16 static const char *RCSId="$Id$"; |
| #include <libpq-fe.h> | #include <libpq-fe.h> |
| #include <libpq/libpq-fs.h> | #include <libpq/libpq-fs.h> |
| // OIDOID from catalog/pg_type.h | // from catalog/pg_type.h |
| #define BOOLOID 16 | |
| #define INT8OID 20 | |
| #define INT2OID 21 | |
| #define INT4OID 23 | |
| #define OIDOID 26 | #define OIDOID 26 |
| #define FLOAT4OID 700 | |
| #define FLOAT8OID 701 | |
| #define DATEOID 1082 | |
| #define TIMEOID 1083 | |
| #define TIMESTAMPOID 1114 | |
| #define TIMESTAMPTZOID 1184 | |
| #define TIMETZOID 1266 | |
| #define NUMERICOID 1700 | |
| // LO_BUFSIZE from interfaces\libpq\fe-lobj.c = 8192 (0x2000) | // LO_BUFSIZE from interfaces\libpq\fe-lobj.c = 8192 (0x2000) |
| // actually writing chunks of that size failed, reduced it twice | // actually writing chunks of that size failed, reduced it twice |
| #define LO_BUFSIZE 0x1000 | #define LO_BUFSIZE 0x1000 |
| // from postgres_ext.h | |
| #define InvalidOid ((Oid) 0) | |
| #include "ltdl.h" | #include "ltdl.h" |
| #define MAX_COLS 500 | |
| #define MAX_STRING 0x400 | #define MAX_STRING 0x400 |
| #define MAX_NUMBER 20 | #define MAX_NUMBER 20 |
| Line 36 static const char *RCSId="$Id$"; | Line 49 static const char *RCSId="$Id$"; |
| #endif | #endif |
| #ifndef max | #ifndef max |
| inline int max(int a,int b) { return a>b?a:b; } | inline int max(int a,int b){ return a>b?a:b; } |
| inline int min(int a,int b){ return a<b?a:b; } | inline int min(int a,int b){ return a<b?a:b; } |
| #endif | #endif |
| static char *lsplit(char *string, char delim) { | static char *lsplit(char *string, char delim){ |
| if(string) { | if(string){ |
| char *v=strchr(string, delim); | if(char *v=strchr(string, delim)){ |
| if(v) { | |
| *v=0; | *v=0; |
| return v+1; | return v+1; |
| } | } |
| } | } |
| return 0; | return 0; |
| } | } |
| static char *lsplit(char **string_ref, char delim) { | static char *lsplit(char **string_ref, char delim){ |
| char *result=*string_ref; | char *result=*string_ref; |
| char *next=lsplit(*string_ref, delim); | char *next=lsplit(*string_ref, delim); |
| *string_ref=next; | *string_ref=next; |
| return result; | return result; |
| } | |
| static char* rsplit(char* string, char delim){ | |
| if(string){ | |
| if(char* v=strrchr(string, delim)){ | |
| *v=0; | |
| return v+1; | |
| } | |
| } | |
| return NULL; | |
| } | |
| static void toupper_str(char *out, const char *in, size_t size){ | |
| while(size--) | |
| *out++=(char)toupper(*in++); | |
| } | } |
| struct Connection { | struct Connection { |
| SQL_Driver_services* services; | SQL_Driver_services* services; |
| PGconn *conn; | PGconn *conn; |
| const char* client_charset; | |
| bool autocommit; | |
| bool without_default_transactions; | |
| }; | }; |
| /** | /** |
| Line 74 public: | Line 104 public: |
| } | } |
| /// get api version | /// get api version |
| int api_version() { return SQL_DRIVER_API_VERSION; } | int api_version(){ return SQL_DRIVER_API_VERSION; } |
| /// initialize driver by loading sql dynamic link library | /// initialize driver by loading sql dynamic link library |
| const char *initialize(char *dlopen_file_spec) { | const char *initialize(char *dlopen_file_spec){ |
| return dlopen_file_spec? | return dlopen_file_spec? |
| dlink(dlopen_file_spec):"client library column is empty"; | dlink(dlopen_file_spec):"client library column is empty"; |
| } | } |
| Line 89 public: | Line 120 public: |
| #define PQclear_throwPQerror PQclear_throw(PQerrorMessage(connection.conn)) | #define PQclear_throwPQerror PQclear_throw(PQerrorMessage(connection.conn)) |
| /** connect | /** connect |
| @param used_only_in_connect_url | @param url |
| format: @b user:pass@host[:port]|[local]/database | format: @b user:pass@host[:port]|[local]/database? |
| ClientCharset=charset& // transcode by parser | |
| charset=value& // transcode by server with 'SET CLIENT_ENCODING=value' | |
| datestyle=value& // 'SET DATESTYLE=value' available values are: ISO|SQL|Postgres|European|US|German [default=ISO] | |
| autocommit=1& // each transaction is commited automatically (default) | |
| WithoutDefaultTransaction=0 // 1 -- disable auto commit, 'BEGIN TRAN' at connection start and COMMIT/ROLLBACK at the end [can't be used together with autocommit option] | |
| */ | */ |
| void connect( | void connect( |
| char *used_only_in_connect_url, | char* url, |
| SQL_Driver_services& services, | SQL_Driver_services& services, |
| void **connection_ref ///< output: Connection* | void** connection_ref ///< output: Connection* |
| ) { | ){ |
| char *user=used_only_in_connect_url; | char* user=url; |
| char *host=lsplit(user, '@'); | char* host=rsplit(user, '@'); |
| char *db=lsplit(host, '/'); | char* db=lsplit(host, '/'); |
| char *pwd=lsplit(user, ':'); | char* pwd=lsplit(user, ':'); |
| char *port=lsplit(host, ':'); | char* port=lsplit(host, ':'); |
| char *options=lsplit(db, '?'); | char *options=lsplit(db, '?'); |
| Connection& connection=*(Connection *)services.malloc(sizeof(Connection)); | char* charset=0; |
| char* datestyle=0; | |
| Connection& connection=*(Connection *)services.malloc(sizeof(Connection)); | |
| *connection_ref=&connection; | *connection_ref=&connection; |
| connection.services=&services; | connection.services=&services; |
| connection.client_charset=0; | |
| connection.autocommit=true; | |
| connection.without_default_transactions=false; | |
| connection.conn=PQsetdbLogin( | connection.conn=PQsetdbLogin( |
| (host&&strcasecmp(host, "local")==0)?NULL/* local Unix domain socket */:host, port, | (host&&strcasecmp(host, "local")==0)?NULL/* local Unix domain socket */:host, port, |
| NULL, NULL, db, user, pwd); | NULL, NULL, db, user, pwd); |
| if(!connection.conn) | if(!connection.conn) |
| services._throw("PQsetdbLogin failed"); | services._throw("PQsetdbLogin failed"); |
| if(PQstatus(connection.conn)!=CONNECTION_OK) | |
| throwPQerror; | |
| char *charset=0; | if(PQstatus(connection.conn)!=CONNECTION_OK) |
| char *datestyle=0; | throwPQerror; |
| while(options) { | while(options){ |
| if(char *key=lsplit(&options, '&')) { | if(char *key=lsplit(&options, '&')){ |
| if(*key) { | if(*key){ |
| if(char *value=lsplit(key, '=')) { | if(char *value=lsplit(key, '=')){ |
| if(strcasecmp(key, "charset")==0) { | if(strcmp(key, "ClientCharset")==0){ |
| toupper_str(value, value, strlen(value)); | |
| connection.client_charset=value; | |
| } else if(strcasecmp(key, "charset")==0){ | |
| charset=value; | charset=value; |
| } else if(strcasecmp(key, "datestyle")==0) { | } else if(strcasecmp(key, "datestyle")==0){ |
| datestyle=value; | datestyle=value; |
| } else if(strcasecmp(key, "autocommit")==0){ | |
| if(connection.without_default_transactions) | |
| services._throw("options WithoutDefaultTransaction and autocommit can't be used together"); | |
| if(atoi(value)==0) | |
| connection.autocommit=false; | |
| } else if(strcmp(key, "WithoutDefaultTransaction")==0){ | |
| if(!connection.autocommit) | |
| services._throw("options WithoutDefaultTransaction and autocommit can't be used together"); | |
| if(atoi(value)==1){ | |
| connection.without_default_transactions=true; | |
| connection.autocommit=false; | |
| } | |
| } else | } else |
| services._throw("unknown connect option" /*key*/); | services._throw("unknown connect option" /*key*/); |
| } else | } else |
| Line 135 public: | Line 192 public: |
| } | } |
| } | } |
| if(charset) { | if(charset){ |
| // set CLIENT_ENCODING | char statement[MAX_STRING]="SET CLIENT_ENCODING="; |
| char statement[MAX_STRING]="set CLIENT_ENCODING="; // win | |
| strncat(statement, charset, MAX_STRING); | strncat(statement, charset, MAX_STRING); |
| PGresult *res=PQexec(connection.conn, statement); | _execute_cmd(connection, statement); |
| if(!res) | |
| throwPQerror; | |
| PQclear(res); // throw out the result [don't need but must call] | |
| } | } |
| if(datestyle) { | if(datestyle){ |
| // set DATESTYLE | char statement[MAX_STRING]="SET DATESTYLE="; |
| char statement[MAX_STRING]="set DATESTYLE="; // ISO,SQL,Postgres,European,NonEuropean=US,German,DEFAULT=ISO | strncat(statement, datestyle, MAX_STRING); |
| strncat(statement, charset, MAX_STRING); | |
| _execute_cmd(connection, statement); | |
| PGresult *res=PQexec(connection.conn, statement); | |
| if(!res) | |
| throwPQerror; | |
| PQclear(res); // throw out the result [don't need but must call] | |
| } | } |
| begin_transaction(connection); | _begin_transaction(connection); |
| } | } |
| void disconnect(void *aconnection) { | |
| Connection& connection=*static_cast<Connection*>(aconnection); | |
| PQfinish(connection.conn); | void disconnect(void *aconnection){ |
| Connection& connection=*static_cast<Connection*>(aconnection); | |
| PQfinish(connection.conn); | |
| connection.conn=0; | connection.conn=0; |
| } | } |
| void commit(void *aconnection) { | |
| Connection& connection=*static_cast<Connection*>(aconnection); | |
| if(PGresult *res=PQexec(connection.conn, "COMMIT")) | void commit(void *aconnection){ |
| PQclear(res); | |
| else | |
| throwPQerror; | |
| begin_transaction(connection); | |
| } | |
| void rollback(void *aconnection) { | |
| Connection& connection=*static_cast<Connection*>(aconnection); | Connection& connection=*static_cast<Connection*>(aconnection); |
| if(!connection.without_default_transactions){ | |
| _execute_cmd(connection, "COMMIT"); | |
| } | |
| _begin_transaction(connection); | |
| } | |
| if(PGresult *res=PQexec(connection.conn, "ROLLBACK")) | void rollback(void *aconnection){ |
| PQclear(res); | Connection& connection=*static_cast<Connection*>(aconnection); |
| else | if(!connection.without_default_transactions){ |
| throwPQerror; | _execute_cmd(connection, "ROLLBACK"); |
| begin_transaction(connection); | } |
| _begin_transaction(connection); | |
| } | } |
| bool ping(void *aconnection) { | bool ping(void *aconnection) { |
| Connection& connection=*static_cast<Connection*>(aconnection); | Connection& connection=*static_cast<Connection*>(aconnection); |
| return PQstatus(connection.conn)==CONNECTION_OK; | return PQstatus(connection.conn)==CONNECTION_OK; |
| } | } |
| const char* quote( | const char* quote(void *aconnection, const char *from, unsigned int length){ |
| void *aconnection, | |
| const char *from, unsigned int length) { | |
| Connection& connection=*static_cast<Connection*>(aconnection); | Connection& connection=*static_cast<Connection*>(aconnection); |
| char *result=(char*)connection.services->malloc_atomic(length*2+1); | char *result=(char*)connection.services->malloc_atomic(length*2+1); |
| char *to=result; | int err=0; |
| while(length--) { | PQescapeStringConn(connection.conn, result, from, length, &err); |
| switch(*from) { | |
| case '\'': // "'" -> "''" | |
| *to++='\''; | |
| break; | |
| case '\\': // "\" -> "\\" | |
| *to++='\\'; | |
| break; | |
| } | |
| *to++=*from++; | |
| } | |
| *to=0; | |
| return result; | return result; |
| } | } |
| void query(void *aconnection, | void query(void *aconnection, |
| const char *astatement, unsigned long offset, unsigned long limit, | const char *astatement, |
| SQL_Driver_query_event_handlers& handlers) { | size_t placeholders_count, Placeholder* placeholders, |
| // _asm int 3; | unsigned long offset, unsigned long limit, |
| SQL_Driver_query_event_handlers& handlers | |
| ){ | |
| Connection& connection=*static_cast<Connection*>(aconnection); | Connection& connection=*static_cast<Connection*>(aconnection); |
| SQL_Driver_services& services=*connection.services; | SQL_Driver_services& services=*connection.services; |
| PGconn *conn=connection.conn; | PGconn *conn=connection.conn; |
| const char *statement=preprocess_statement(connection, | const char* client_charset=connection.client_charset; |
| astatement, offset, limit); | const char* request_charset=services.request_charset(); |
| bool transcode_needed=client_charset && strcmp(client_charset, request_charset)!=0; | |
| PGresult *res=PQexec(conn, statement); | |
| const char** paramValues; | |
| if(placeholders_count>0){ | |
| int binds_size=sizeof(char)*placeholders_count; | |
| paramValues = static_cast<const char**>(services.malloc_atomic(binds_size)); | |
| _bind_parameters(placeholders_count, placeholders, paramValues, connection, transcode_needed); | |
| } | |
| if(transcode_needed){ | |
| // transcode query from $request:charset to ?ClientCharset | |
| size_t length=strlen(astatement); | |
| services.transcode(astatement, length, | |
| astatement, length, | |
| request_charset, | |
| client_charset); | |
| } | |
| const char *statement=_preprocess_statement(connection, astatement, offset, limit); | |
| // error after prepare? | |
| PGresult *res; | |
| if(placeholders_count>0){ | |
| res=PQexecParams(conn, statement, placeholders_count, NULL, paramValues, NULL, NULL, 0); | |
| } else { | |
| res=PQexec(conn, statement); | |
| } | |
| if(!res) | if(!res) |
| throwPQerror; | throwPQerror; |
| switch(PQresultStatus(res)) { | switch(PQresultStatus(res)) { |
| case PGRES_EMPTY_QUERY: | case PGRES_EMPTY_QUERY: |
| PQclear_throw("no query"); | PQclear_throw("no query"); |
| break; | break; |
| case PGRES_COMMAND_OK: | case PGRES_COMMAND_OK: // empty result: insert|delete|update|... |
| // empty result: insert|delete|update|... | PQclear(res); |
| PQclear(res); | return; |
| return; | case PGRES_TUPLES_OK: |
| case PGRES_TUPLES_OK: | break; |
| break; | default: |
| default: | PQclear_throwPQerror; |
| PQclear_throwPQerror; | break; |
| break; | |
| } | } |
| int column_count=PQnfields(res); | int column_count=PQnfields(res); |
| Line 253 public: | Line 313 public: |
| goto cleanup; \ | goto cleanup; \ |
| } | } |
| if(column_count>MAX_COLS) | |
| column_count=MAX_COLS; | |
| unsigned int column_types[MAX_COLS]; | |
| bool transcode_column[MAX_COLS]; | |
| for(int i=0; i<column_count; i++){ | for(int i=0; i<column_count; i++){ |
| char *name=PQfname(res, i); | char *name=PQfname(res, i); |
| size_t size=strlen(name); | size_t length=strlen(name); |
| char* str=(char*)services.malloc(size+1); | column_types[i]=PQftype(res, i); |
| memcpy(str, name, size+1); | switch(column_types[i]){ |
| CHECK(handlers.add_column(sql_error, str, size)); | case BOOLOID: |
| case INT8OID: | |
| case INT2OID: | |
| case INT4OID: | |
| case FLOAT4OID: | |
| case FLOAT8OID: | |
| case DATEOID: | |
| case TIMEOID: | |
| case TIMESTAMPOID: | |
| case TIMESTAMPTZOID: | |
| case TIMETZOID: | |
| case NUMERICOID: | |
| transcode_column[i]=false; | |
| break; | |
| default: | |
| transcode_column[i]=transcode_needed; | |
| break; | |
| } | |
| char* strm=(char*)services.malloc(length+1); | |
| memcpy(strm, name, length+1); | |
| const char* str=strm; | |
| if(transcode_needed) | |
| // transcode column name from ?ClientCharset to $request:charset | |
| services.transcode(str, length, | |
| str, length, | |
| client_charset, | |
| request_charset); | |
| CHECK(handlers.add_column(sql_error, str, length)); | |
| } | } |
| CHECK(handlers.before_rows(sql_error)); | CHECK(handlers.before_rows(sql_error)); |
| Line 268 public: | Line 363 public: |
| CHECK(handlers.add_row(sql_error)); | CHECK(handlers.add_row(sql_error)); |
| for(int i=0; i<column_count; i++){ | for(int i=0; i<column_count; i++){ |
| const char *cell=PQgetvalue(res, r, i); | const char *cell=PQgetvalue(res, r, i); |
| size_t size; | size_t length; |
| char* str; | const char* str; |
| if(PQftype(res, i)==OIDOID) { | |
| // ObjectID column, read object bytes | switch(column_types[i]){ |
| case OIDOID: | |
| char *error_pos=0; | { |
| Oid oid=cell?atoi(cell):0; | char *error_pos=0; |
| int fd=lo_open(conn, oid, INV_READ); | Oid oid=cell?atoi(cell):0; |
| if(fd>=0) { | int fd=lo_open(conn, oid, INV_READ); |
| // seek to end | if(fd>=0){ |
| if(lo_lseek(conn, fd, 0, SEEK_END)<0) | // seek to end |
| PQclear_throwPQerror; | if(lo_lseek(conn, fd, 0, SEEK_END)<0) |
| // get size | PQclear_throwPQerror; |
| int size_tell=lo_tell(conn, fd); | // get length |
| if(size_tell<0) | int size_tell=lo_tell(conn, fd); |
| PQclear_throwPQerror; | if(size_tell<0) |
| // seek to begin | PQclear_throwPQerror; |
| if(lo_lseek(conn, fd, 0, SEEK_SET)<0) | // seek to begin |
| PQclear_throwPQerror; | if(lo_lseek(conn, fd, 0, SEEK_SET)<0) |
| size=(size_t)size_tell; | PQclear_throwPQerror; |
| if(size) { | length=(size_t)size_tell; |
| // read | if(length){ |
| str=(char*)services.malloc(size+1); | // read |
| if(!lo_read_ex(conn, fd, str, size_tell)) | char* strm=(char*)services.malloc(length+1); |
| PQclear_throw("lo_read can not read all bytes of object"); | if(!lo_read_ex(conn, fd, strm, size_tell)) |
| str[size]=0; | PQclear_throw("lo_read can not read all bytes of object"); |
| strm[length]=0; | |
| str=strm; | |
| } else | |
| str=0; | |
| if(lo_close(conn, fd)<0) | |
| PQclear_throwPQerror; | |
| } else | |
| PQclear_throwPQerror; | |
| } | |
| default: | |
| // normal column, read it normally | |
| length=(size_t)PQgetlength(res, r, i); | |
| if(length){ | |
| char* strm=(char*)services.malloc(length+1); | |
| memcpy(strm, cell, length+1); | |
| str=strm; | |
| } else | } else |
| str=0; | str=0; |
| if(lo_close(conn, fd)<0) | |
| PQclear_throwPQerror; | |
| } else | |
| PQclear_throwPQerror; | |
| } else { | |
| // normal column, read it normally | |
| size=(size_t)PQgetlength(res, r, i); | |
| if(size) { | |
| str=(char*)services.malloc(size+1); | |
| memcpy(str, cell, size+1); | |
| } else | |
| str=0; | |
| } | } |
| CHECK(handlers.add_row_cell(sql_error, str, size)); | |
| if(str && length && transcode_column[i]){ | |
| //services._throw("tr"); | |
| // transcode cell value from ?ClientCharset to $request:charset | |
| services.transcode(str, length, | |
| str, length, | |
| client_charset, | |
| request_charset); | |
| } | |
| CHECK(handlers.add_row_cell(sql_error, str, length)); | |
| } | } |
| } | } |
| cleanup: | cleanup: |
| PQclear(res); | PQclear(res); |
| if(failed) | if(failed) |
| services._throw(sql_error); | services._throw(sql_error); |
| commit(aconnection); | |
| } | } |
| private: // private funcs | private: |
| void _bind_parameters( | |
| size_t placeholders_count, | |
| Placeholder* placeholders, | |
| const char** paramValues, | |
| Connection& connection, | |
| bool transcode_needed | |
| ){ | |
| for(size_t i=0; i<placeholders_count; i++){ | |
| Placeholder& ph=placeholders[i]; | |
| if(transcode_needed){ | |
| size_t name_length; | |
| size_t value_length; | |
| connection.services->transcode(ph.name, strlen(ph.name), | |
| ph.name, name_length, | |
| connection.services->request_charset(), | |
| connection.client_charset); | |
| if(ph.value) { | |
| connection.services->transcode(ph.value, strlen(ph.value), | |
| ph.value, value_length, | |
| connection.services->request_charset(), | |
| connection.client_charset); | |
| } | |
| } | |
| int name_numner=atoi(ph.name); | |
| if(name_numner <= 0 || name_numner > placeholders_count) | |
| connection.services->_throw("bad bind parameter key"); | |
| void begin_transaction(Connection& connection) { | paramValues[name_numner-1]=ph.value; |
| if(PGresult *res=PQexec(connection.conn, "BEGIN")) | } |
| PQclear(res); | } |
| /** | |
| Executes a query and throw away the result. | |
| */ | |
| void _execute_cmd(const Connection& connection, const char *query){ | |
| if(PGresult *res=PQexec(connection.conn, query)) | |
| PQclear(res); // throw out the result [don't need but must call] | |
| else | else |
| throwPQerror; | throwPQerror; |
| } | } |
| const char *preprocess_statement(Connection& connection, | void _begin_transaction(Connection& connection){ |
| const char *astatement, unsigned long offset, unsigned long limit) { | if(!connection.without_default_transactions) |
| _execute_cmd(connection, "BEGIN"); | |
| } | |
| const char *_preprocess_statement( | |
| Connection& connection, | |
| const char *astatement, | |
| unsigned long offset, | |
| unsigned long limit | |
| ){ | |
| PGconn *conn=connection.conn; | PGconn *conn=connection.conn; |
| size_t statement_size=strlen(astatement); | size_t statement_size=strlen(astatement); |
| Line 339 private: // private funcs | Line 494 private: // private funcs |
| +1); | +1); |
| // offset & limit -> suffixes | // offset & limit -> suffixes |
| const char *o; | const char *o; |
| if(offset || limit) { | if(offset || limit!=SQL_NO_LIMIT){ |
| char *cur=result; | char *cur=result; |
| memcpy(cur, astatement, statement_size); cur+=statement_size; | memcpy(cur, astatement, statement_size); cur+=statement_size; |
| if(limit) | if(limit!=SQL_NO_LIMIT) |
| cur+=snprintf(cur, 7+MAX_NUMBER, " limit %u", limit); | cur+=snprintf(cur, 7+MAX_NUMBER, " limit %u", limit); |
| if(offset) | if(offset) |
| cur+=snprintf(cur, 8+MAX_NUMBER, " offset %u", offset); | cur+=snprintf(cur, 8+MAX_NUMBER, " offset %u", offset); |
| Line 412 private: // private funcs | Line 567 private: // private funcs |
| private: // lo_read/write exchancements | private: // lo_read/write exchancements |
| bool lo_read_ex(PGconn *conn, int fd, const/*paf*/ char *buf, size_t len) { | bool lo_read_ex(PGconn *conn, int fd, const/*paf*/ char *buf, size_t len) { |
| int size_read; | return lo_rw_method (conn, fd, buf, len, lo_read); |
| while(len && (size_read=lo_read(conn, fd, buf, min(LO_BUFSIZE, len)))>0) { | |
| buf+=size_read; | |
| len-=size_read; | |
| } | |
| return len==0; | |
| } | } |
| bool lo_write_ex(PGconn *conn, int fd, const/*paf*/ char *buf, size_t len) { | bool lo_write_ex(PGconn *conn, int fd, const/*paf*/ char *buf, size_t len) { |
| int size_written; | return lo_rw_method (conn, fd, buf, len, lo_write); |
| while(len && (size_written=lo_write(conn, fd, buf, min(LO_BUFSIZE, len)))>0) { | } |
| buf+=size_written; | |
| len-=size_written; | bool lo_rw_method(PGconn *conn, int fd, const/*paf*/ char *buf, size_t len, int (*lo_func)(PGconn *conn, int fd, const/*paf*/ char *buf, size_t len)) { |
| int size_op; | |
| while(len && (size_op=lo_func(conn, fd, buf, min(LO_BUFSIZE, len)))>0) { | |
| buf+=size_op; | |
| len-=size_op; | |
| } | } |
| return len==0; | return len==0; |
| } | } |
| Line 443 private: // conn client library funcs | Line 597 private: // conn client library funcs |
| typedef char *(*t_PQerrorMessage)(const PGconn* conn); t_PQerrorMessage PQerrorMessage; | typedef char *(*t_PQerrorMessage)(const PGconn* conn); t_PQerrorMessage PQerrorMessage; |
| typedef ConnStatusType (*t_PQstatus)(const PGconn *conn); t_PQstatus PQstatus; | typedef ConnStatusType (*t_PQstatus)(const PGconn *conn); t_PQstatus PQstatus; |
| typedef PGresult *(*t_PQexec)(PGconn *conn, | typedef PGresult *(*t_PQexec)(PGconn *conn, |
| const char *query); t_PQexec PQexec; | const char *query); t_PQexec PQexec; |
| typedef PGresult *(*t_PQexecParams)( | |
| PGconn *conn, | |
| const char *query, | |
| int nParams, | |
| const Oid *paramTypes, | |
| const char * const *paramValues, | |
| const int *paramLengths, | |
| const int *paramFormats, | |
| int resultFormat); t_PQexecParams PQexecParams; | |
| typedef ExecStatusType (*t_PQresultStatus)(const PGresult *res); t_PQresultStatus PQresultStatus; | typedef ExecStatusType (*t_PQresultStatus)(const PGresult *res); t_PQresultStatus PQresultStatus; |
| typedef int (*t_PQgetlength)(const PGresult *res, | typedef int (*t_PQgetlength)(const PGresult *res, |
| int tup_num, | int tup_num, |
| int field_num); t_PQgetlength PQgetlength; | int field_num); t_PQgetlength PQgetlength; |
| typedef char* (*t_PQgetvalue)(const PGresult *res, | typedef char* (*t_PQgetvalue)(const PGresult *res, |
| int tup_num, | int tup_num, |
| int field_num); t_PQgetvalue PQgetvalue; | int field_num); t_PQgetvalue PQgetvalue; |
| typedef int (*t_PQntuples)(const PGresult *res); t_PQntuples PQntuples; | typedef int (*t_PQntuples)(const PGresult *res); t_PQntuples PQntuples; |
| typedef char *(*t_PQfname)(const PGresult *res, | typedef char *(*t_PQfname)(const PGresult *res, |
| int field_index); t_PQfname PQfname; | int field_index); t_PQfname PQfname; |
| typedef int (*t_PQnfields)(const PGresult *res); t_PQnfields PQnfields; | typedef int (*t_PQnfields)(const PGresult *res); t_PQnfields PQnfields; |
| Line 459 private: // conn client library funcs | Line 623 private: // conn client library funcs |
| typedef Oid (*t_PQftype)(const PGresult *res, int field_num); t_PQftype PQftype; | typedef Oid (*t_PQftype)(const PGresult *res, int field_num); t_PQftype PQftype; |
| typedef size_t (*t_PQescapeStringConn)(PGconn *conn, | |
| char *to, const char *from, size_t length, | |
| int *error); t_PQescapeStringConn PQescapeStringConn; | |
| typedef int (*t_lo_open)(PGconn *conn, Oid lobjId, int mode); t_lo_open lo_open; | typedef int (*t_lo_open)(PGconn *conn, Oid lobjId, int mode); t_lo_open lo_open; |
| typedef int (*t_lo_close)(PGconn *conn, int fd); t_lo_close lo_close; | typedef int (*t_lo_close)(PGconn *conn, int fd); t_lo_close lo_close; |
| typedef int (*t_lo_read)(PGconn *conn, int fd, const/*paf*/ char *buf, size_t len); t_lo_read lo_read; | typedef int (*t_lo_read)(PGconn *conn, int fd, const/*paf*/ char *buf, size_t len); t_lo_read lo_read; |
| Line 475 private: // conn client library funcs li | Line 643 private: // conn client library funcs li |
| const char *dlink(const char *dlopen_file_spec) { | const char *dlink(const char *dlopen_file_spec) { |
| if(lt_dlinit()) | if(lt_dlinit()) |
| return lt_dlerror(); | return lt_dlerror(); |
| lt_dlhandle handle=lt_dlopen(dlopen_file_spec); | lt_dlhandle handle=lt_dlopen(dlopen_file_spec); |
| if(!handle) | if(!handle) |
| return "can not open the dynamic link module"; | return "can not open the dynamic link module"; |
| #define DSLINK(name, action) \ | #define DSLINK(name, action) \ |
| Line 498 private: // conn client library funcs li | Line 666 private: // conn client library funcs li |
| DLINK(PQclear); | DLINK(PQclear); |
| DLINK(PQresultStatus); | DLINK(PQresultStatus); |
| DLINK(PQexec); | DLINK(PQexec); |
| DLINK(PQexecParams); | |
| DLINK(PQftype); | DLINK(PQftype); |
| DLINK(PQescapeStringConn); | |
| DLINK(lo_open); DLINK(lo_close); | DLINK(lo_open); DLINK(lo_close); |
| DLINK(lo_read); DLINK(lo_write); | DLINK(lo_read); DLINK(lo_write); |
| DLINK(lo_lseek); DLINK(lo_creat); | DLINK(lo_lseek); DLINK(lo_creat); |
| Line 507 private: // conn client library funcs li | Line 677 private: // conn client library funcs li |
| return 0; | return 0; |
| } | } |
| }; | }; |
| extern "C" SQL_Driver *SQL_DRIVER_CREATE() { | extern "C" SQL_Driver *SQL_DRIVER_CREATE() { |