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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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|
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// The common client receiver executive. |
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lscp_status_t lscp_client_recv ( lscp_client_t *pClient, char *pchBuffer, int *pcchBuffer, int iTimeout ) |
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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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|
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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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// 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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if (iTimeout < 1) |
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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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*pcchBuffer = recv(pClient->cmd.sock, pchBuffer, *pcchBuffer, 0); |
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if (*pcchBuffer > 0) |
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ret = LSCP_OK; |
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else if (*pcchBuffer < 0) |
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lscp_socket_perror("lscp_client_recv: recv"); |
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else if (*pcchBuffer == 0) { |
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// Damn, server probably disconnected, |
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// 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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} |
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} // Check if select has timed out. |
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else if (iSelect == 0) |
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ret = LSCP_TIMEOUT; |
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else |
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lscp_socket_perror("lscp_client_recv: select"); |
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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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// 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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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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// Wait for receive event... |
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cchResult = sizeof(achResult); |
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ret = lscp_client_recv(pClient, achResult, &cchResult, pClient->iTimeout); |
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|
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switch (ret) { |
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|
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case 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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break; |
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|
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case LSCP_TIMEOUT: |
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// Fake a result message. |
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pszResult = "Timeout during receive operation"; |
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iErrno = (int) ret; |
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break; |
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|
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case LSCP_QUIT: |
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// Fake a result message. |
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pszResult = "Server terminated the connection"; |
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iErrno = (int) ret; |
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break; |
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|
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case LSCP_FAILED: |
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default: |
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// What's down? |
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pszResult = "Failure during receive operation"; |
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break; |
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} |
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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; |
242 |
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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} |
256 |
|
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return psz; |
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} |
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|
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// Unquote and make a duplicate of an in-split string. |
261 |
void lscp_unquote_dup ( char **ppszDst, char **ppszSrc ) |
262 |
{ |
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// Free desteny string, if already there. |
264 |
if (*ppszDst) |
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free(*ppszDst); |
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*ppszDst = NULL; |
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// Unquote and duplicate. |
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if (*ppszSrc) |
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*ppszDst = lscp_unquote(ppszSrc, 1); |
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} |
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|
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|
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// Custom tokenizer. |
274 |
char *lscp_strtok ( char *pchBuffer, const char *pszSeps, char **ppch ) |
275 |
{ |
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char *pszToken; |
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|
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if (pchBuffer == NULL) |
279 |
pchBuffer = *ppch; |
280 |
|
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pchBuffer += strspn(pchBuffer, pszSeps); |
282 |
if (*pchBuffer == '\0') |
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return NULL; |
284 |
|
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pszToken = pchBuffer; |
286 |
pchBuffer = strpbrk(pszToken, pszSeps); |
287 |
if (pchBuffer == NULL) { |
288 |
*ppch = strchr(pszToken, '\0'); |
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} else { |
290 |
*pchBuffer = '\0'; |
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*ppch = pchBuffer + 1; |
292 |
while (**ppch && strchr(pszSeps, **ppch)) |
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(*ppch)++; |
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} |
295 |
|
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return pszToken; |
297 |
} |
298 |
|
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|
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// Split a comma separated string into a null terminated array of strings. |
301 |
char **lscp_szsplit_create ( const char *pszCsv, const char *pszSeps ) |
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{ |
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char *pszHead, *pch; |
304 |
int iSize, i, j, cchSeps; |
305 |
char **ppszSplit, **ppszNewSplit; |
306 |
|
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// Initial size is one chunk away. |
308 |
iSize = LSCP_SPLIT_CHUNK1; |
309 |
// Allocate and split... |
310 |
ppszSplit = (char **) malloc(iSize * sizeof(char *)); |
311 |
if (ppszSplit == NULL) |
312 |
return NULL; |
313 |
|
314 |
// Make a copy of the original string. |
315 |
i = 0; |
316 |
pszHead = (char *) pszCsv; |
317 |
if ((ppszSplit[i++] = lscp_unquote(&pszHead, 1)) == NULL) { |
318 |
free(ppszSplit); |
319 |
return NULL; |
320 |
} |
321 |
|
322 |
// Go on for it... |
323 |
cchSeps = strlen(pszSeps); |
324 |
while ((pch = strpbrk(pszHead, pszSeps)) != NULL) { |
325 |
// Pre-advance to next item. |
326 |
pszHead = pch + cchSeps; |
327 |
// Trim and null terminate current item. |
328 |
while (isspace(*(pch - 1)) && pch > ppszSplit[0]) |
329 |
--pch; |
330 |
*pch = (char) 0; |
331 |
// Make it official. |
332 |
ppszSplit[i++] = lscp_unquote(&pszHead, 0); |
333 |
// Do we need to grow? |
334 |
if (i >= iSize) { |
335 |
// Yes, but only grow in chunks. |
336 |
iSize += LSCP_SPLIT_CHUNK1; |
337 |
// Allocate and copy to new split array. |
338 |
ppszNewSplit = (char **) malloc(iSize * sizeof(char *)); |
339 |
if (ppszNewSplit) { |
340 |
for (j = 0; j < i; j++) |
341 |
ppszNewSplit[j] = ppszSplit[j]; |
342 |
free(ppszSplit); |
343 |
ppszSplit = ppszNewSplit; |
344 |
} |
345 |
} |
346 |
} |
347 |
|
348 |
// NULL terminate split array. |
349 |
for ( ; i < iSize; i++) |
350 |
ppszSplit[i] = NULL; |
351 |
|
352 |
return ppszSplit; |
353 |
} |
354 |
|
355 |
|
356 |
// Free allocated memory of a legal null terminated array of strings. |
357 |
void lscp_szsplit_destroy ( char **ppszSplit ) |
358 |
{ |
359 |
// Our split string is always the first item, if any. |
360 |
if (ppszSplit && ppszSplit[0]) |
361 |
free(ppszSplit[0]); |
362 |
// Now free the array itself. |
363 |
if (ppszSplit) |
364 |
free(ppszSplit); |
365 |
} |
366 |
|
367 |
|
368 |
#ifdef LSCP_SZSPLIT_COUNT |
369 |
|
370 |
// Return the number of items of a null terminated array of strings. |
371 |
int lscp_szsplit_count ( char **ppszSplit ) |
372 |
{ |
373 |
int i = 0; |
374 |
while (ppszSplit && ppszSplit[i]) |
375 |
i++; |
376 |
return i; |
377 |
} |
378 |
|
379 |
// Return the allocated number of items of a splitted string array. |
380 |
int lscp_szsplit_size ( char **ppszSplit ) |
381 |
{ |
382 |
return LSCP_SPLIT_SIZE(lscp_szsplit_count(ppszSplit)); |
383 |
} |
384 |
|
385 |
#endif // LSCP_SZSPLIT_COUNT |
386 |
|
387 |
|
388 |
// Split a comma separated string into a -1 terminated array of positive integers. |
389 |
int *lscp_isplit_create ( const char *pszCsv, const char *pszSeps ) |
390 |
{ |
391 |
char *pchHead, *pch; |
392 |
int iSize, i, j, cchSeps; |
393 |
int *piSplit, *piNewSplit; |
394 |
|
395 |
// Get it clean first. |
396 |
pchHead = lscp_ltrim((char *) pszCsv); |
397 |
if (*pchHead == (char) 0) |
398 |
return NULL; |
399 |
|
400 |
// Initial size is one chunk away. |
401 |
iSize = LSCP_SPLIT_CHUNK1; |
402 |
// Allocate and split... |
403 |
piSplit = (int *) malloc(iSize * sizeof(int)); |
404 |
if (piSplit == NULL) |
405 |
return NULL; |
406 |
|
407 |
// Make a copy of the original string. |
408 |
i = 0; |
409 |
if ((piSplit[i++] = atoi(pchHead)) < 0) { |
410 |
free(piSplit); |
411 |
return NULL; |
412 |
} |
413 |
|
414 |
// Go on for it... |
415 |
cchSeps = strlen(pszSeps); |
416 |
while ((pch = strpbrk(pchHead, pszSeps)) != NULL) { |
417 |
// Pre-advance to next item. |
418 |
pchHead = pch + cchSeps; |
419 |
// Make it official. |
420 |
piSplit[i++] = atoi(pchHead); |
421 |
// Do we need to grow? |
422 |
if (i >= iSize) { |
423 |
// Yes, but only grow in chunks. |
424 |
iSize += LSCP_SPLIT_CHUNK1; |
425 |
// Allocate and copy to new split array. |
426 |
piNewSplit = (int *) malloc(iSize * sizeof(int)); |
427 |
if (piNewSplit) { |
428 |
for (j = 0; j < i; j++) |
429 |
piNewSplit[j] = piSplit[j]; |
430 |
free(piSplit); |
431 |
piSplit = piNewSplit; |
432 |
} |
433 |
} |
434 |
} |
435 |
|
436 |
// NULL terminate split array. |
437 |
for ( ; i < iSize; i++) |
438 |
piSplit[i] = -1; |
439 |
|
440 |
return piSplit; |
441 |
} |
442 |
|
443 |
|
444 |
// Destroy a integer splitted array. |
445 |
void lscp_isplit_destroy ( int *piSplit ) |
446 |
{ |
447 |
if (piSplit) |
448 |
free(piSplit); |
449 |
} |
450 |
|
451 |
|
452 |
#ifdef LSCP_ISPLIT_COUNT |
453 |
|
454 |
// Compute a string list valid item count. |
455 |
int lscp_isplit_count ( int *piSplit ) |
456 |
{ |
457 |
int i = 0; |
458 |
while (piSplit && piSplit[i] >= 0) |
459 |
i++; |
460 |
return i; |
461 |
} |
462 |
|
463 |
// Compute a string list size. |
464 |
int lscp_isplit_size ( int *piSplit ) |
465 |
{ |
466 |
return LSCP_SPLIT_SIZE(lscp_isplit_count(piSplit)); |
467 |
} |
468 |
|
469 |
#endif // LSCP_ISPLIT_COUNT |
470 |
|
471 |
|
472 |
// Split a string into a null terminated array of parameter items. |
473 |
lscp_param_t *lscp_psplit_create ( const char *pszCsv, const char *pszSeps1, const char *pszSeps2 ) |
474 |
{ |
475 |
char *pszHead, *pch; |
476 |
int iSize, i, j, cchSeps1, cchSeps2; |
477 |
lscp_param_t *ppSplit, *ppNewSplit; |
478 |
|
479 |
pszHead = strdup(pszCsv); |
480 |
if (pszHead == NULL) |
481 |
return NULL; |
482 |
|
483 |
iSize = LSCP_SPLIT_CHUNK1; |
484 |
ppSplit = (lscp_param_t *) malloc(iSize * sizeof(lscp_param_t)); |
485 |
if (ppSplit == NULL) { |
486 |
free(pszHead); |
487 |
return NULL; |
488 |
} |
489 |
|
490 |
cchSeps1 = strlen(pszSeps1); |
491 |
cchSeps2 = strlen(pszSeps2); |
492 |
|
493 |
i = 0; |
494 |
while ((pch = strpbrk(pszHead, pszSeps1)) != NULL) { |
495 |
ppSplit[i].key = pszHead; |
496 |
pszHead = pch + cchSeps1; |
497 |
*pch = (char) 0; |
498 |
ppSplit[i].value = lscp_unquote(&pszHead, 0); |
499 |
if ((pch = strpbrk(pszHead, pszSeps2)) != NULL) { |
500 |
pszHead = pch + cchSeps2; |
501 |
*pch = (char) 0; |
502 |
} |
503 |
if (++i >= iSize) { |
504 |
iSize += LSCP_SPLIT_CHUNK1; |
505 |
ppNewSplit = (lscp_param_t *) malloc(iSize * sizeof(lscp_param_t)); |
506 |
if (ppNewSplit) { |
507 |
for (j = 0; j < i; j++) { |
508 |
ppNewSplit[j].key = ppSplit[j].key; |
509 |
ppNewSplit[j].value = ppSplit[j].value; |
510 |
} |
511 |
free(ppSplit); |
512 |
ppSplit = ppNewSplit; |
513 |
} |
514 |
} |
515 |
} |
516 |
|
517 |
if (i < 1) |
518 |
free(pszHead); |
519 |
|
520 |
for ( ; i < iSize; i++) { |
521 |
ppSplit[i].key = NULL; |
522 |
ppSplit[i].value = NULL; |
523 |
} |
524 |
|
525 |
return ppSplit; |
526 |
} |
527 |
|
528 |
|
529 |
// Destroy a parameter list array. |
530 |
void lscp_psplit_destroy ( lscp_param_t *ppSplit ) |
531 |
{ |
532 |
if (ppSplit && ppSplit[0].key) |
533 |
free(ppSplit[0].key); |
534 |
if (ppSplit) |
535 |
free(ppSplit); |
536 |
} |
537 |
|
538 |
|
539 |
#ifdef LSCP_PSPLIT_COUNT |
540 |
|
541 |
// Compute a parameter list valid item count. |
542 |
int lscp_psplit_count ( lscp_param_t *ppSplit ) |
543 |
{ |
544 |
int i = 0; |
545 |
while (ppSplit && ppSplit[i].key) |
546 |
i++; |
547 |
return i; |
548 |
} |
549 |
|
550 |
// Compute a parameter list size. |
551 |
int lscp_psplit_size ( lscp_param_t *ppSplit ) |
552 |
{ |
553 |
return LSCP_SPLIT_SIZE(lscp_psplit_count(ppSplit)); |
554 |
} |
555 |
|
556 |
#endif // LSCP_PSPLIT_COUNT |
557 |
|
558 |
|
559 |
// Allocate a parameter list, optionally copying an existing one. |
560 |
void lscp_plist_alloc (lscp_param_t **ppList) |
561 |
{ |
562 |
lscp_param_t *pParams; |
563 |
int iSize, i; |
564 |
|
565 |
if (ppList) { |
566 |
iSize = LSCP_SPLIT_CHUNK1; |
567 |
pParams = (lscp_param_t *) malloc(iSize * sizeof(lscp_param_t)); |
568 |
if (pParams) { |
569 |
for (i = 0 ; i < iSize; i++) { |
570 |
pParams[i].key = NULL; |
571 |
pParams[i].value = NULL; |
572 |
} |
573 |
} |
574 |
*ppList = pParams; |
575 |
} |
576 |
} |
577 |
|
578 |
|
579 |
// Destroy a parameter list, including all it's contents. |
580 |
void lscp_plist_free ( lscp_param_t **ppList ) |
581 |
{ |
582 |
lscp_param_t *pParams; |
583 |
int i; |
584 |
|
585 |
if (ppList) { |
586 |
if (*ppList) { |
587 |
pParams = *ppList; |
588 |
for (i = 0; pParams && pParams[i].key; i++) { |
589 |
free(pParams[i].key); |
590 |
free(pParams[i].value); |
591 |
} |
592 |
free(pParams); |
593 |
} |
594 |
*ppList = NULL; |
595 |
} |
596 |
} |
597 |
|
598 |
|
599 |
// Add an item to a parameter list, growing it as fit. |
600 |
void lscp_plist_append ( lscp_param_t **ppList, const char *pszKey, const char *pszValue ) |
601 |
{ |
602 |
lscp_param_t *pParams; |
603 |
lscp_param_t *pNewParams; |
604 |
int iSize, iNewSize; |
605 |
int i = 0; |
606 |
|
607 |
if (ppList && *ppList) { |
608 |
pParams = *ppList; |
609 |
while (pParams[i].key) { |
610 |
if (strcasecmp(pParams[i].key, pszKey) == 0) { |
611 |
if (pParams[i].value) |
612 |
free(pParams[i].value); |
613 |
pParams[i].value = strdup(pszValue); |
614 |
return; |
615 |
} |
616 |
i++; |
617 |
} |
618 |
iSize = LSCP_SPLIT_SIZE(i); |
619 |
pParams[i].key = strdup(pszKey); |
620 |
pParams[i].value = strdup(pszValue); |
621 |
if (++i >= iSize) { |
622 |
iNewSize = iSize + LSCP_SPLIT_CHUNK1; |
623 |
pNewParams = (lscp_param_t *) malloc(iNewSize * sizeof(lscp_param_t)); |
624 |
for (i = 0; i < iSize; i++) { |
625 |
pParams[i].key = pParams[i].key; |
626 |
pParams[i].value = pParams[i].value; |
627 |
} |
628 |
for ( ; i < iNewSize; i++) { |
629 |
pNewParams[i].key = NULL; |
630 |
pNewParams[i].value = NULL; |
631 |
} |
632 |
free(pParams); |
633 |
*ppList = pNewParams; |
634 |
} |
635 |
} |
636 |
} |
637 |
|
638 |
#ifdef LSCP_PLIST_COUNT |
639 |
|
640 |
// Compute a parameter list valid item count. |
641 |
int lscp_plist_count ( lscp_param_t **ppList ) |
642 |
{ |
643 |
lscp_param_t *pParams; |
644 |
int i = 0; |
645 |
if (ppList && *ppList) { |
646 |
pParams = *ppList; |
647 |
while (pParams[i].key) |
648 |
i++; |
649 |
} |
650 |
return i; |
651 |
} |
652 |
|
653 |
// Compute the legal parameter list size. |
654 |
int lscp_plist_size ( lscp_param_t **ppList ) |
655 |
{ |
656 |
return LSCP_SPLIT_SIZE(lscp_plist_count(ppList)); |
657 |
} |
658 |
|
659 |
#endif // LSCP_PLIST_COUNT |
660 |
|
661 |
|
662 |
//------------------------------------------------------------------------- |
663 |
// Engine info struct helper functions. |
664 |
|
665 |
void lscp_engine_info_init ( lscp_engine_info_t *pEngineInfo ) |
666 |
{ |
667 |
pEngineInfo->description = NULL; |
668 |
pEngineInfo->version = NULL; |
669 |
} |
670 |
|
671 |
void lscp_engine_info_free ( lscp_engine_info_t *pEngineInfo ) |
672 |
{ |
673 |
if (pEngineInfo->description) |
674 |
free(pEngineInfo->description); |
675 |
if (pEngineInfo->version) |
676 |
free(pEngineInfo->version); |
677 |
} |
678 |
|
679 |
void lscp_engine_info_reset ( lscp_engine_info_t *pEngineInfo ) |
680 |
{ |
681 |
lscp_engine_info_free(pEngineInfo); |
682 |
lscp_engine_info_init(pEngineInfo); |
683 |
} |
684 |
|
685 |
|
686 |
//------------------------------------------------------------------------- |
687 |
// Channel info struct helper functions. |
688 |
|
689 |
void lscp_channel_info_init ( lscp_channel_info_t *pChannelInfo ) |
690 |
{ |
691 |
pChannelInfo->engine_name = NULL; |
692 |
pChannelInfo->audio_device = 0; |
693 |
pChannelInfo->audio_channels = 0; |
694 |
pChannelInfo->audio_routing = NULL; |
695 |
pChannelInfo->instrument_file = NULL; |
696 |
pChannelInfo->instrument_nr = 0; |
697 |
pChannelInfo->instrument_name = NULL; |
698 |
pChannelInfo->instrument_status = 0; |
699 |
pChannelInfo->midi_device = 0; |
700 |
pChannelInfo->midi_port = 0; |
701 |
pChannelInfo->midi_channel = 0; |
702 |
pChannelInfo->volume = 0.0; |
703 |
} |
704 |
|
705 |
void lscp_channel_info_free ( lscp_channel_info_t *pChannelInfo ) |
706 |
{ |
707 |
if (pChannelInfo->engine_name) |
708 |
free(pChannelInfo->engine_name); |
709 |
if (pChannelInfo->audio_routing) |
710 |
lscp_szsplit_destroy(pChannelInfo->audio_routing); |
711 |
if (pChannelInfo->instrument_file) |
712 |
free(pChannelInfo->instrument_file); |
713 |
if (pChannelInfo->instrument_name) |
714 |
free(pChannelInfo->instrument_name); |
715 |
} |
716 |
|
717 |
void lscp_channel_info_reset ( lscp_channel_info_t *pChannelInfo ) |
718 |
{ |
719 |
lscp_channel_info_free(pChannelInfo); |
720 |
lscp_channel_info_init(pChannelInfo); |
721 |
} |
722 |
|
723 |
|
724 |
//------------------------------------------------------------------------- |
725 |
// Driver info struct functions. |
726 |
|
727 |
void lscp_driver_info_init ( lscp_driver_info_t *pDriverInfo ) |
728 |
{ |
729 |
pDriverInfo->description = NULL; |
730 |
pDriverInfo->version = NULL; |
731 |
pDriverInfo->parameters = NULL; |
732 |
} |
733 |
|
734 |
void lscp_driver_info_free ( lscp_driver_info_t *pDriverInfo ) |
735 |
{ |
736 |
if (pDriverInfo->description) |
737 |
free(pDriverInfo->description); |
738 |
if (pDriverInfo->version) |
739 |
free(pDriverInfo->version); |
740 |
lscp_szsplit_destroy(pDriverInfo->parameters); |
741 |
} |
742 |
|
743 |
void lscp_driver_info_reset ( lscp_driver_info_t *pDriverInfo ) |
744 |
{ |
745 |
lscp_driver_info_free(pDriverInfo); |
746 |
lscp_driver_info_init(pDriverInfo); |
747 |
} |
748 |
|
749 |
|
750 |
//------------------------------------------------------------------------- |
751 |
// Device info struct functions. |
752 |
|
753 |
void lscp_device_info_init ( lscp_device_info_t *pDeviceInfo ) |
754 |
{ |
755 |
pDeviceInfo->driver = NULL; |
756 |
lscp_plist_alloc(&(pDeviceInfo->params)); |
757 |
} |
758 |
|
759 |
void lscp_device_info_free ( lscp_device_info_t *pDeviceInfo ) |
760 |
{ |
761 |
if (pDeviceInfo->driver) |
762 |
free(pDeviceInfo->driver); |
763 |
lscp_plist_free(&(pDeviceInfo->params)); |
764 |
} |
765 |
|
766 |
void lscp_device_info_reset ( lscp_device_info_t *pDeviceInfo ) |
767 |
{ |
768 |
lscp_device_info_free(pDeviceInfo); |
769 |
lscp_device_info_init(pDeviceInfo); |
770 |
} |
771 |
|
772 |
|
773 |
//------------------------------------------------------------------------- |
774 |
// Device channel/port info struct functions. |
775 |
|
776 |
void lscp_device_port_info_init ( lscp_device_port_info_t *pDevicePortInfo ) |
777 |
{ |
778 |
pDevicePortInfo->name = NULL; |
779 |
lscp_plist_alloc(&(pDevicePortInfo->params)); |
780 |
} |
781 |
|
782 |
void lscp_device_port_info_free ( lscp_device_port_info_t *pDevicePortInfo ) |
783 |
{ |
784 |
if (pDevicePortInfo->name) |
785 |
free(pDevicePortInfo->name); |
786 |
lscp_plist_free(&(pDevicePortInfo->params)); |
787 |
} |
788 |
|
789 |
void lscp_device_port_info_reset ( lscp_device_port_info_t *pDevicePortInfo ) |
790 |
{ |
791 |
lscp_device_port_info_free(pDevicePortInfo); |
792 |
lscp_device_port_info_init(pDevicePortInfo); |
793 |
} |
794 |
|
795 |
|
796 |
//------------------------------------------------------------------------- |
797 |
// Parameter struct helper functions. |
798 |
|
799 |
void lscp_param_info_init ( lscp_param_info_t *pParamInfo ) |
800 |
{ |
801 |
pParamInfo->type = LSCP_TYPE_NONE; |
802 |
pParamInfo->description = NULL; |
803 |
pParamInfo->mandatory = 0; |
804 |
pParamInfo->fix = 0; |
805 |
pParamInfo->multiplicity = 0; |
806 |
pParamInfo->depends = NULL; |
807 |
pParamInfo->defaultv = NULL; |
808 |
pParamInfo->range_min = NULL; |
809 |
pParamInfo->range_max = NULL; |
810 |
pParamInfo->possibilities = NULL; |
811 |
} |
812 |
|
813 |
void lscp_param_info_free ( lscp_param_info_t *pParamInfo ) |
814 |
{ |
815 |
if (pParamInfo->description) |
816 |
free(pParamInfo->description); |
817 |
lscp_szsplit_destroy(pParamInfo->depends); |
818 |
if (pParamInfo->defaultv) |
819 |
free(pParamInfo->defaultv); |
820 |
if (pParamInfo->range_min) |
821 |
free(pParamInfo->range_min); |
822 |
if (pParamInfo->range_max) |
823 |
free(pParamInfo->range_max); |
824 |
lscp_szsplit_destroy(pParamInfo->possibilities); |
825 |
} |
826 |
|
827 |
void lscp_param_info_reset ( lscp_param_info_t *pParamInfo ) |
828 |
{ |
829 |
lscp_param_info_free(pParamInfo); |
830 |
lscp_param_info_init(pParamInfo); |
831 |
} |
832 |
|
833 |
|
834 |
//------------------------------------------------------------------------- |
835 |
// Concatenate a parameter list (key='value'...) into a string, |
836 |
// appending a crlf terminator. |
837 |
|
838 |
int lscp_param_concat ( char *pszBuffer, int cchMaxBuffer, lscp_param_t *pParams ) |
839 |
{ |
840 |
int cchBuffer, cchParam, i; |
841 |
|
842 |
if (pszBuffer == NULL) |
843 |
return 0; |
844 |
|
845 |
cchBuffer = strlen(pszBuffer); |
846 |
for (i = 0; pParams && pParams[i].key && pParams[i].value; i++) { |
847 |
cchParam = strlen(pParams[i].key) + strlen(pParams[i].value) + 4; |
848 |
if (cchBuffer + cchParam + 2 < cchMaxBuffer) { |
849 |
sprintf(pszBuffer + cchBuffer, " %s='%s'", pParams[i].key, pParams[i].value); |
850 |
cchBuffer += cchParam; |
851 |
} |
852 |
} |
853 |
|
854 |
if (cchBuffer + 2 < cchMaxBuffer) { |
855 |
pszBuffer[cchBuffer++] = '\r'; |
856 |
pszBuffer[cchBuffer++] = '\n'; |
857 |
pszBuffer[cchBuffer ] = (char) 0; |
858 |
} |
859 |
|
860 |
return cchBuffer; |
861 |
} |
862 |
|
863 |
|
864 |
// end of common.c |