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// common.c |
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// |
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/**************************************************************************** |
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liblscp - LinuxSampler Control Protocol API |
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Copyright (C) 2004, rncbc aka Rui Nuno Capela. All rights reserved. |
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|
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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|
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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|
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You should have received a copy of the GNU Lesser General Public |
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License along with this library; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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|
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*****************************************************************************/ |
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|
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#include "common.h" |
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|
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#include <ctype.h> |
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|
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|
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// Split chunk size magic: |
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// LSCP_SPLIT_CHUNK1 := 2 ^ LSCP_SPLIT_CHUNK2 |
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#define LSCP_SPLIT_CHUNK1 4 |
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#define LSCP_SPLIT_CHUNK2 2 |
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// Chunk size legal calculator. |
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#define LSCP_SPLIT_SIZE(n) ((((n) >> LSCP_SPLIT_CHUNK2) + 1) << LSCP_SPLIT_CHUNK2) |
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|
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|
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//------------------------------------------------------------------------- |
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// Local client request executive. |
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|
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// Result buffer internal settler. |
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void lscp_client_set_result ( lscp_client_t *pClient, char *pszResult, int iErrno ) |
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{ |
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if (pClient->pszResult) |
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free(pClient->pszResult); |
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pClient->pszResult = NULL; |
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|
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pClient->iErrno = iErrno; |
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|
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if (pszResult) |
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pClient->pszResult = strdup(lscp_ltrim(pszResult)); |
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} |
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|
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// The main client requester call executive. |
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lscp_status_t lscp_client_call ( lscp_client_t *pClient, const char *pszQuery ) |
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{ |
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fd_set fds; // File descriptor list for select(). |
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int fd, fdmax; // Maximum file descriptor number. |
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struct timeval tv; // For specifying a timeout value. |
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int iSelect; // Holds select return status. |
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int iTimeout; |
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int cchQuery; |
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char achResult[LSCP_BUFSIZ]; |
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int cchResult; |
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const char *pszSeps = ":[]"; |
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char *pszResult; |
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char *pszToken; |
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char *pch; |
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int iErrno; |
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|
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lscp_status_t ret = LSCP_FAILED; |
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|
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if (pClient == NULL) |
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return ret; |
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|
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pszResult = NULL; |
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iErrno = -1; |
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|
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// Check if command socket socket is still valid. |
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if (pClient->cmd.sock == INVALID_SOCKET) { |
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pszResult = "Connection closed or no longer valid"; |
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lscp_client_set_result(pClient, pszResult, iErrno); |
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return ret; |
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} |
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|
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// Send data, and then, wait for the result... |
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cchQuery = strlen(pszQuery); |
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if (send(pClient->cmd.sock, pszQuery, cchQuery, 0) < cchQuery) { |
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lscp_socket_perror("_lscp_client_call: send"); |
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pszResult = "Failure during send operation"; |
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lscp_client_set_result(pClient, pszResult, iErrno); |
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return ret; |
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} |
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|
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// Prepare for waiting on select... |
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fd = (int) pClient->cmd.sock; |
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FD_ZERO(&fds); |
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FD_SET((unsigned int) fd, &fds); |
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fdmax = fd; |
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|
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// Use the timeout select feature... |
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iTimeout = pClient->iTimeout; |
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if (iTimeout > 1000) { |
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tv.tv_sec = iTimeout / 1000; |
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iTimeout -= tv.tv_sec * 1000; |
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} |
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else tv.tv_sec = 0; |
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tv.tv_usec = iTimeout * 1000; |
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|
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// Wait for event... |
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iSelect = select(fdmax + 1, &fds, NULL, NULL, &tv); |
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if (iSelect > 0 && FD_ISSET(fd, &fds)) { |
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// May recv now... |
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cchResult = recv(pClient->cmd.sock, achResult, sizeof(achResult), 0); |
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if (cchResult > 0) { |
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// Assume early success. |
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ret = LSCP_OK; |
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// Always force the result to be null terminated (and trim trailing CRLFs)! |
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while (cchResult > 0 && (achResult[cchResult - 1] == '\n' || achResult[cchResult- 1] == '\r')) |
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cchResult--; |
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achResult[cchResult] = (char) 0; |
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// Check if the response it's an error or warning message. |
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if (strncasecmp(achResult, "WRN:", 4) == 0) |
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ret = LSCP_WARNING; |
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else if (strncasecmp(achResult, "ERR:", 4) == 0) |
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ret = LSCP_ERROR; |
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// So we got a result... |
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if (ret == LSCP_OK) { |
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// Reset errno in case of success. |
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iErrno = 0; |
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// Is it a special successful response? |
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if (strncasecmp(achResult, "OK[", 3) == 0) { |
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// Parse the OK message, get the return string under brackets... |
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pszToken = lscp_strtok(achResult, pszSeps, &(pch)); |
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if (pszToken) |
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pszResult = lscp_strtok(NULL, pszSeps, &(pch)); |
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} |
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else pszResult = achResult; |
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// The result string is now set to the command response, if any. |
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} else { |
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// Parse the error/warning message, skip first colon... |
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pszToken = lscp_strtok(achResult, pszSeps, &(pch)); |
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if (pszToken) { |
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// Get the error number... |
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pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
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if (pszToken) { |
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iErrno = atoi(pszToken); |
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// And make the message text our final result. |
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pszResult = lscp_strtok(NULL, pszSeps, &(pch)); |
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} |
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} |
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// The result string is set to the error/warning message text. |
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} |
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} |
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else if (cchResult == 0) { |
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// Damn, server disconnected, we better free everything down here. |
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lscp_socket_agent_free(&(pClient->evt)); |
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lscp_socket_agent_free(&(pClient->cmd)); |
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// Fake a result message. |
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ret = LSCP_QUIT; |
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pszResult = "Server terminated the connection"; |
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iErrno = (int) ret; |
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} else { |
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// What's down? |
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lscp_socket_perror("_lscp_client_call: recv"); |
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pszResult = "Failure during receive operation"; |
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} |
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} // Check if select has timed out. |
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else if (iSelect == 0) { |
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// Fake a result message. |
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ret = LSCP_TIMEOUT; |
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pszResult = "Timeout during receive operation"; |
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iErrno = (int) ret; |
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} |
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else lscp_socket_perror("_lscp_client_call: select"); |
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|
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// Make the result official... |
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lscp_client_set_result(pClient, pszResult, iErrno); |
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|
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return ret; |
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} |
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|
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|
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//------------------------------------------------------------------------- |
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// Other general utility functions. |
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|
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// Trimming left spaces... |
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char *lscp_ltrim ( char *psz ) |
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{ |
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while (isspace(*psz)) |
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psz++; |
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return psz; |
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} |
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|
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// Unquote an in-split string. |
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char *lscp_unquote ( char **ppsz, int dup ) |
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{ |
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char chQuote; |
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char *psz = *ppsz; |
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|
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while (isspace(*psz)) |
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++psz; |
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if (*psz == '\"' || *psz == '\'') { |
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chQuote = *psz++; |
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while (isspace(*psz)) |
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++psz; |
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if (dup) |
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psz = strdup(psz); |
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*ppsz = psz; |
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if (*ppsz) { |
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while (**ppsz && **ppsz != chQuote) |
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++(*ppsz); |
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if (**ppsz) { |
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while (isspace(*(*ppsz - 1)) && *ppsz > psz) |
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--(*ppsz); |
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*(*ppsz)++ = (char) 0; |
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} |
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} |
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} |
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else if (dup) { |
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psz = strdup(psz); |
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*ppsz = psz; |
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} |
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|
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return psz; |
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} |
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|
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|
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// Custom tokenizer. |
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char *lscp_strtok ( char *pchBuffer, const char *pszSeps, char **ppch ) |
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{ |
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char *pszToken; |
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|
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if (pchBuffer == NULL) |
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pchBuffer = *ppch; |
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|
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pchBuffer += strspn(pchBuffer, pszSeps); |
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if (*pchBuffer == '\0') |
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return NULL; |
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|
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pszToken = pchBuffer; |
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pchBuffer = strpbrk(pszToken, pszSeps); |
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if (pchBuffer == NULL) { |
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*ppch = strchr(pszToken, '\0'); |
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} else { |
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*pchBuffer = '\0'; |
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*ppch = pchBuffer + 1; |
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while (**ppch && strchr(pszSeps, **ppch)) |
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(*ppch)++; |
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} |
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|
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return pszToken; |
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} |
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|
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|
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// Split a comma separated string into a null terminated array of strings. |
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char **lscp_szsplit_create ( const char *pszCsv, const char *pszSeps ) |
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{ |
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char *pszHead, *pch; |
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int iSize, i, j, cchSeps; |
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char **ppszSplit, **ppszNewSplit; |
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|
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// Initial size is one chunk away. |
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iSize = LSCP_SPLIT_CHUNK1; |
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// Allocate and split... |
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ppszSplit = (char **) malloc(iSize * sizeof(char *)); |
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if (ppszSplit == NULL) |
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return NULL; |
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|
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// Make a copy of the original string. |
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i = 0; |
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pszHead = (char *) pszCsv; |
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if ((ppszSplit[i++] = lscp_unquote(&pszHead, 1)) == NULL) { |
272 |
free(ppszSplit); |
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return NULL; |
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} |
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|
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// Go on for it... |
277 |
cchSeps = strlen(pszSeps); |
278 |
while ((pch = strpbrk(pszHead, pszSeps)) != NULL) { |
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// Pre-advance to next item. |
280 |
pszHead = pch + cchSeps; |
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// Trim and null terminate current item. |
282 |
while (isspace(*(pch - 1)) && pch > ppszSplit[0]) |
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--pch; |
284 |
*pch = (char) 0; |
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// Make it official. |
286 |
ppszSplit[i++] = lscp_unquote(&pszHead, 0); |
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// Do we need to grow? |
288 |
if (i >= iSize) { |
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// Yes, but only grow in chunks. |
290 |
iSize += LSCP_SPLIT_CHUNK1; |
291 |
// Allocate and copy to new split array. |
292 |
ppszNewSplit = (char **) malloc(iSize * sizeof(char *)); |
293 |
if (ppszNewSplit) { |
294 |
for (j = 0; j < i; j++) |
295 |
ppszNewSplit[j] = ppszSplit[j]; |
296 |
free(ppszSplit); |
297 |
ppszSplit = ppszNewSplit; |
298 |
} |
299 |
} |
300 |
} |
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|
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// NULL terminate split array. |
303 |
for ( ; i < iSize; i++) |
304 |
ppszSplit[i] = NULL; |
305 |
|
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return ppszSplit; |
307 |
} |
308 |
|
309 |
|
310 |
// Free allocated memory of a legal null terminated array of strings. |
311 |
void lscp_szsplit_destroy ( char **ppszSplit ) |
312 |
{ |
313 |
// Our split string is always the first item, if any. |
314 |
if (ppszSplit && ppszSplit[0]) |
315 |
free(ppszSplit[0]); |
316 |
// Now free the array itself. |
317 |
if (ppszSplit) |
318 |
free(ppszSplit); |
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} |
320 |
|
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|
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#ifdef LSCP_SZSPLIT_COUNT |
323 |
|
324 |
// Return the number of items of a null terminated array of strings. |
325 |
int lscp_szsplit_count ( char **ppszSplit ) |
326 |
{ |
327 |
int i = 0; |
328 |
while (ppszSplit && ppszSplit[i]) |
329 |
i++; |
330 |
return i; |
331 |
} |
332 |
|
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// Return the allocated number of items of a splitted string array. |
334 |
int lscp_szsplit_size ( char **ppszSplit ) |
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{ |
336 |
return LSCP_SPLIT_SIZE(lscp_szsplit_count(ppszSplit)); |
337 |
} |
338 |
|
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#endif // LSCP_SZSPLIT_COUNT |
340 |
|
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|
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// Split a comma separated string into a -1 terminated array of positive integers. |
343 |
int *lscp_isplit_create ( const char *pszCsv, const char *pszSeps ) |
344 |
{ |
345 |
char *pchHead, *pch; |
346 |
int iSize, i, j, cchSeps; |
347 |
int *piSplit, *piNewSplit; |
348 |
|
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// Initial size is one chunk away. |
350 |
iSize = LSCP_SPLIT_CHUNK1; |
351 |
// Allocate and split... |
352 |
piSplit = (int *) malloc(iSize * sizeof(int)); |
353 |
if (piSplit == NULL) |
354 |
return NULL; |
355 |
|
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// Make a copy of the original string. |
357 |
i = 0; |
358 |
pchHead = (char *) pszCsv; |
359 |
if ((piSplit[i++] = atoi(pchHead)) < 0) { |
360 |
free(piSplit); |
361 |
return NULL; |
362 |
} |
363 |
|
364 |
// Go on for it... |
365 |
cchSeps = strlen(pszSeps); |
366 |
while ((pch = strpbrk(pchHead, pszSeps)) != NULL) { |
367 |
// Pre-advance to next item. |
368 |
pchHead = pch + cchSeps; |
369 |
// Make it official. |
370 |
piSplit[i++] = atoi(pchHead); |
371 |
// Do we need to grow? |
372 |
if (i >= iSize) { |
373 |
// Yes, but only grow in chunks. |
374 |
iSize += LSCP_SPLIT_CHUNK1; |
375 |
// Allocate and copy to new split array. |
376 |
piNewSplit = (int *) malloc(iSize * sizeof(int)); |
377 |
if (piNewSplit) { |
378 |
for (j = 0; j < i; j++) |
379 |
piNewSplit[j] = piSplit[j]; |
380 |
free(piSplit); |
381 |
piSplit = piNewSplit; |
382 |
} |
383 |
} |
384 |
} |
385 |
|
386 |
// NULL terminate split array. |
387 |
for ( ; i < iSize; i++) |
388 |
piSplit[i] = -1; |
389 |
|
390 |
return piSplit; |
391 |
} |
392 |
|
393 |
|
394 |
// Destroy a integer splitted array. |
395 |
void lscp_isplit_destroy ( int *piSplit ) |
396 |
{ |
397 |
if (piSplit) |
398 |
free(piSplit); |
399 |
} |
400 |
|
401 |
|
402 |
#ifdef LSCP_ISPLIT_COUNT |
403 |
|
404 |
// Compute a string list valid item count. |
405 |
int lscp_isplit_count ( int *piSplit ) |
406 |
{ |
407 |
int i = 0; |
408 |
while (piSplit && piSplit[i] >= 0) |
409 |
i++; |
410 |
return i; |
411 |
} |
412 |
|
413 |
// Compute a string list size. |
414 |
int lscp_isplit_size ( int *piSplit ) |
415 |
{ |
416 |
return LSCP_SPLIT_SIZE(lscp_isplit_count(piSplit)); |
417 |
} |
418 |
|
419 |
#endif // LSCP_ISPLIT_COUNT |
420 |
|
421 |
|
422 |
// Split a string into a null terminated array of parameter items. |
423 |
lscp_param_t *lscp_psplit_create ( const char *pszCsv, const char *pszSeps1, const char *pszSeps2 ) |
424 |
{ |
425 |
char *pszHead, *pch; |
426 |
int iSize, i, j, cchSeps1, cchSeps2; |
427 |
lscp_param_t *ppSplit, *ppNewSplit; |
428 |
|
429 |
pszHead = strdup(pszCsv); |
430 |
if (pszHead == NULL) |
431 |
return NULL; |
432 |
|
433 |
iSize = LSCP_SPLIT_CHUNK1; |
434 |
ppSplit = (lscp_param_t *) malloc(iSize * sizeof(lscp_param_t)); |
435 |
if (ppSplit == NULL) { |
436 |
free(pszHead); |
437 |
return NULL; |
438 |
} |
439 |
|
440 |
cchSeps1 = strlen(pszSeps1); |
441 |
cchSeps2 = strlen(pszSeps2); |
442 |
|
443 |
i = 0; |
444 |
while ((pch = strpbrk(pszHead, pszSeps1)) != NULL) { |
445 |
ppSplit[i].key = pszHead; |
446 |
pszHead = pch + cchSeps1; |
447 |
*pch = (char) 0; |
448 |
ppSplit[i].value = lscp_unquote(&pszHead, 0); |
449 |
if ((pch = strpbrk(pszHead, pszSeps2)) != NULL) { |
450 |
pszHead = pch + cchSeps2; |
451 |
*pch = (char) 0; |
452 |
} |
453 |
if (++i >= iSize) { |
454 |
iSize += LSCP_SPLIT_CHUNK1; |
455 |
ppNewSplit = (lscp_param_t *) malloc(iSize * sizeof(lscp_param_t)); |
456 |
if (ppNewSplit) { |
457 |
for (j = 0; j < i; j++) { |
458 |
ppNewSplit[j].key = ppSplit[j].key; |
459 |
ppNewSplit[j].value = ppSplit[j].value; |
460 |
} |
461 |
free(ppSplit); |
462 |
ppSplit = ppNewSplit; |
463 |
} |
464 |
} |
465 |
} |
466 |
|
467 |
if (i < 1) |
468 |
free(pszHead); |
469 |
|
470 |
for ( ; i < iSize; i++) { |
471 |
ppSplit[i].key = NULL; |
472 |
ppSplit[i].value = NULL; |
473 |
} |
474 |
|
475 |
return ppSplit; |
476 |
} |
477 |
|
478 |
|
479 |
// Destroy a parameter list array. |
480 |
void lscp_psplit_destroy ( lscp_param_t *ppSplit ) |
481 |
{ |
482 |
if (ppSplit && ppSplit[0].key) |
483 |
free(ppSplit[0].key); |
484 |
if (ppSplit) |
485 |
free(ppSplit); |
486 |
} |
487 |
|
488 |
|
489 |
#ifdef LSCP_PSPLIT_COUNT |
490 |
|
491 |
// Compute a parameter list valid item count. |
492 |
int lscp_psplit_count ( lscp_param_t *ppSplit ) |
493 |
{ |
494 |
int i = 0; |
495 |
while (ppSplit && ppSplit[i].key) |
496 |
i++; |
497 |
return i; |
498 |
} |
499 |
|
500 |
// Compute a parameter list size. |
501 |
int lscp_psplit_size ( lscp_param_t *ppSplit ) |
502 |
{ |
503 |
return LSCP_SPLIT_SIZE(lscp_psplit_count(ppSplit)); |
504 |
} |
505 |
|
506 |
#endif // LSCP_PSPLIT_COUNT |
507 |
|
508 |
|
509 |
// Allocate a parameter list, optionally copying an existing one. |
510 |
void lscp_plist_alloc (lscp_param_t **ppList) |
511 |
{ |
512 |
lscp_param_t *pParams; |
513 |
int iSize, i; |
514 |
|
515 |
if (ppList) { |
516 |
iSize = LSCP_SPLIT_CHUNK1; |
517 |
pParams = (lscp_param_t *) malloc(iSize * sizeof(lscp_param_t)); |
518 |
if (pParams) { |
519 |
for (i = 0 ; i < iSize; i++) { |
520 |
pParams[i].key = NULL; |
521 |
pParams[i].value = NULL; |
522 |
} |
523 |
} |
524 |
*ppList = pParams; |
525 |
} |
526 |
} |
527 |
|
528 |
|
529 |
// Destroy a parameter list, including all it's contents. |
530 |
void lscp_plist_free ( lscp_param_t **ppList ) |
531 |
{ |
532 |
lscp_param_t *pParams; |
533 |
int i; |
534 |
|
535 |
if (ppList) { |
536 |
if (*ppList) { |
537 |
pParams = *ppList; |
538 |
for (i = 0; pParams && pParams[i].key; i++) { |
539 |
free(pParams[i].key); |
540 |
free(pParams[i].value); |
541 |
} |
542 |
free(pParams); |
543 |
} |
544 |
*ppList = NULL; |
545 |
} |
546 |
} |
547 |
|
548 |
|
549 |
// Add an item to a parameter list, growing it as fit. |
550 |
void lscp_plist_append ( lscp_param_t **ppList, const char *pszKey, const char *pszValue ) |
551 |
{ |
552 |
lscp_param_t *pParams; |
553 |
lscp_param_t *pNewParams; |
554 |
int iSize, iNewSize; |
555 |
int i = 0; |
556 |
|
557 |
if (ppList && *ppList) { |
558 |
pParams = *ppList; |
559 |
while (pParams[i].key) |
560 |
i++; |
561 |
iSize = LSCP_SPLIT_SIZE(i); |
562 |
pParams[i].key = strdup(pszKey); |
563 |
pParams[i].value = strdup(pszValue); |
564 |
if (++i >= iSize) { |
565 |
iNewSize = iSize + LSCP_SPLIT_CHUNK1; |
566 |
pNewParams = (lscp_param_t *) malloc(iNewSize * sizeof(lscp_param_t)); |
567 |
for (i = 0; i < iSize; i++) { |
568 |
pParams[i].key = pParams[i].key; |
569 |
pParams[i].value = pParams[i].value; |
570 |
} |
571 |
for ( ; i < iNewSize; i++) { |
572 |
pNewParams[i].key = NULL; |
573 |
pNewParams[i].value = NULL; |
574 |
} |
575 |
free(pParams); |
576 |
*ppList = pNewParams; |
577 |
} |
578 |
} |
579 |
} |
580 |
|
581 |
|
582 |
// Compute a parameter list valid item count. |
583 |
int lscp_plist_count ( lscp_param_t **ppList ) |
584 |
{ |
585 |
lscp_param_t *pParams; |
586 |
int i = 0; |
587 |
if (ppList && *ppList) { |
588 |
pParams = *ppList; |
589 |
while (pParams[i].key) |
590 |
i++; |
591 |
} |
592 |
return i; |
593 |
} |
594 |
|
595 |
|
596 |
// Compute the legal parameter list size. |
597 |
int lscp_plist_size ( lscp_param_t **ppList ) |
598 |
{ |
599 |
return LSCP_SPLIT_SIZE(lscp_plist_count(ppList)); |
600 |
} |
601 |
|
602 |
|
603 |
|
604 |
//------------------------------------------------------------------------- |
605 |
// Engine info struct helper functions. |
606 |
|
607 |
void lscp_engine_info_init ( lscp_engine_info_t *pEngineInfo ) |
608 |
{ |
609 |
pEngineInfo->description = NULL; |
610 |
pEngineInfo->version = NULL; |
611 |
} |
612 |
|
613 |
void lscp_engine_info_reset ( lscp_engine_info_t *pEngineInfo ) |
614 |
{ |
615 |
if (pEngineInfo->description) |
616 |
free(pEngineInfo->description); |
617 |
if (pEngineInfo->version) |
618 |
free(pEngineInfo->version); |
619 |
|
620 |
lscp_engine_info_init(pEngineInfo); |
621 |
} |
622 |
|
623 |
|
624 |
//------------------------------------------------------------------------- |
625 |
// Channel info struct helper functions. |
626 |
|
627 |
void lscp_channel_info_init ( lscp_channel_info_t *pChannelInfo ) |
628 |
{ |
629 |
pChannelInfo->engine_name = NULL; |
630 |
pChannelInfo->audio_device = 0; |
631 |
pChannelInfo->audio_channels = 0; |
632 |
pChannelInfo->audio_routing = NULL; |
633 |
pChannelInfo->instrument_file = NULL; |
634 |
pChannelInfo->instrument_nr = 0; |
635 |
pChannelInfo->instrument_status = 0; |
636 |
pChannelInfo->midi_device = 0; |
637 |
pChannelInfo->midi_port = 0; |
638 |
pChannelInfo->midi_channel = 0; |
639 |
pChannelInfo->volume = 0.0; |
640 |
} |
641 |
|
642 |
void lscp_channel_info_reset ( lscp_channel_info_t *pChannelInfo ) |
643 |
{ |
644 |
if (pChannelInfo->engine_name) |
645 |
free(pChannelInfo->engine_name); |
646 |
if (pChannelInfo->audio_routing) |
647 |
lscp_szsplit_destroy(pChannelInfo->audio_routing); |
648 |
if (pChannelInfo->instrument_file) |
649 |
free(pChannelInfo->instrument_file); |
650 |
|
651 |
lscp_channel_info_init(pChannelInfo); |
652 |
} |
653 |
|
654 |
|
655 |
//------------------------------------------------------------------------- |
656 |
// Driver info struct functions. |
657 |
|
658 |
void lscp_driver_info_init ( lscp_driver_info_t *pDriverInfo ) |
659 |
{ |
660 |
pDriverInfo->description = NULL; |
661 |
pDriverInfo->version = NULL; |
662 |
pDriverInfo->parameters = NULL; |
663 |
} |
664 |
|
665 |
void lscp_driver_info_reset ( lscp_driver_info_t *pDriverInfo ) |
666 |
{ |
667 |
if (pDriverInfo->description) |
668 |
free(pDriverInfo->description); |
669 |
if (pDriverInfo->version) |
670 |
free(pDriverInfo->version); |
671 |
lscp_szsplit_destroy(pDriverInfo->parameters); |
672 |
|
673 |
lscp_driver_info_init(pDriverInfo); |
674 |
} |
675 |
|
676 |
|
677 |
//------------------------------------------------------------------------- |
678 |
// Device info struct functions. |
679 |
|
680 |
void lscp_device_info_init ( lscp_device_info_t *pDeviceInfo ) |
681 |
{ |
682 |
pDeviceInfo->driver = NULL; |
683 |
lscp_plist_alloc(&(pDeviceInfo->params)); |
684 |
} |
685 |
|
686 |
void lscp_device_info_reset ( lscp_device_info_t *pDeviceInfo ) |
687 |
{ |
688 |
if (pDeviceInfo->driver) |
689 |
free(pDeviceInfo->driver); |
690 |
lscp_plist_free(&(pDeviceInfo->params)); |
691 |
|
692 |
lscp_device_info_init(pDeviceInfo); |
693 |
} |
694 |
|
695 |
|
696 |
//------------------------------------------------------------------------- |
697 |
// Device channel/port info struct functions. |
698 |
|
699 |
void lscp_device_port_info_init ( lscp_device_port_info_t *pDevicePortInfo ) |
700 |
{ |
701 |
pDevicePortInfo->name = NULL; |
702 |
lscp_plist_alloc(&(pDevicePortInfo->params)); |
703 |
} |
704 |
|
705 |
void lscp_device_port_info_reset ( lscp_device_port_info_t *pDevicePortInfo ) |
706 |
{ |
707 |
if (pDevicePortInfo->name) |
708 |
free(pDevicePortInfo->name); |
709 |
lscp_plist_free(&(pDevicePortInfo->params)); |
710 |
|
711 |
lscp_device_port_info_init(pDevicePortInfo); |
712 |
} |
713 |
|
714 |
|
715 |
//------------------------------------------------------------------------- |
716 |
// Parameter struct helper functions. |
717 |
|
718 |
void lscp_param_info_init ( lscp_param_info_t *pParamInfo ) |
719 |
{ |
720 |
pParamInfo->type = LSCP_TYPE_NONE; |
721 |
pParamInfo->description = NULL; |
722 |
pParamInfo->mandatory = 0; |
723 |
pParamInfo->fix = 0; |
724 |
pParamInfo->multiplicity = 0; |
725 |
pParamInfo->depends = NULL; |
726 |
pParamInfo->defaultv = NULL; |
727 |
pParamInfo->range_min = NULL; |
728 |
pParamInfo->range_max = NULL; |
729 |
pParamInfo->possibilities = NULL; |
730 |
} |
731 |
|
732 |
void lscp_param_info_reset ( lscp_param_info_t *pParamInfo ) |
733 |
{ |
734 |
if (pParamInfo->description) |
735 |
free(pParamInfo->description); |
736 |
lscp_szsplit_destroy(pParamInfo->depends); |
737 |
if (pParamInfo->defaultv) |
738 |
free(pParamInfo->defaultv); |
739 |
if (pParamInfo->range_min) |
740 |
free(pParamInfo->range_min); |
741 |
if (pParamInfo->range_max) |
742 |
free(pParamInfo->range_max); |
743 |
lscp_szsplit_destroy(pParamInfo->possibilities); |
744 |
|
745 |
lscp_param_info_init(pParamInfo); |
746 |
} |
747 |
|
748 |
|
749 |
//------------------------------------------------------------------------- |
750 |
// Concatenate a parameter list (key='value'...) into a string, |
751 |
// appending a crlf terminator. |
752 |
|
753 |
int lscp_param_concat ( char *pszBuffer, int cchMaxBuffer, lscp_param_t *pParams ) |
754 |
{ |
755 |
int cchBuffer, cchParam, i; |
756 |
|
757 |
if (pszBuffer == NULL || pParams == NULL) |
758 |
return 0; |
759 |
|
760 |
cchBuffer = strlen(pszBuffer); |
761 |
for (i = 0; pParams[i].key && pParams[i].value; i++) { |
762 |
cchParam = strlen(pParams[i].key) + strlen(pParams[i].value) + 4; |
763 |
if (cchBuffer + cchParam + 2 < cchMaxBuffer) { |
764 |
sprintf(pszBuffer + cchBuffer, " %s='%s'", pParams[i].key, pParams[i].value); |
765 |
cchBuffer += cchParam; |
766 |
} |
767 |
} |
768 |
|
769 |
if (cchBuffer + 2 < cchMaxBuffer) { |
770 |
pszBuffer[cchBuffer++] = '\r'; |
771 |
pszBuffer[cchBuffer++] = '\n'; |
772 |
} |
773 |
|
774 |
return cchBuffer; |
775 |
} |
776 |
|
777 |
|
778 |
// end of common.c |