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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) 2004-2007, 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 General Public License along |
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with this program; if not, write to the Free Software Foundation, Inc., |
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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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#include <sys/time.h> |
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#include <sys/errno.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, int iResult ) |
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{ |
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int cchQuery; |
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char achBuffer[LSCP_BUFSIZ]; |
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int cchBuffer; |
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const char *pszSeps = ":[]"; |
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char *pszBuffer; |
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char *pszToken; |
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char *pch; |
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int iErrno; |
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char *pszResult; |
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int cchResult; |
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ssize_t sz; |
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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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iErrno = -1; |
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cchResult = 0; |
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pszResult = NULL; |
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pszBuffer = NULL; |
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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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// Check if last transaction has timed out, in which case |
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// we'll retry wait and flush for some pending garbage... |
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if (pClient->iTimeoutCount > 0) { |
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// We'll hope to get rid of timeout trouble... |
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pClient->iTimeoutCount = 0; |
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cchBuffer = sizeof(achBuffer); |
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ret = lscp_client_recv(pClient, achBuffer, &cchBuffer, pClient->iTimeout); |
150 |
if (ret != LSCP_OK) { |
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// Things seems to be unresolved. Fake a result message. |
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iErrno = (int) ret; |
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pszResult = "Failure during flush timeout 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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|
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// Send data, and then, wait for the result... |
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cchQuery = strlen(pszQuery); |
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sz = send(pClient->cmd.sock, pszQuery, cchQuery, 0); |
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if (sz < 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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if (sz < 0) |
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iErrno = -errno; |
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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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// Keep receiving while result is not the expected one: |
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// single-line result (iResult = 0) : one single CRLF ends the receipt; |
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// multi-line result (iResult > 0) : one "." followed by a last CRLF; |
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|
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while (pszResult == NULL) { |
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|
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// Wait for receive event... |
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cchBuffer = sizeof(achBuffer) - 1; |
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ret = lscp_client_recv(pClient, achBuffer, &cchBuffer, 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. |
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achBuffer[cchBuffer] = (char) 0; |
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// Check if the response it's an error or warning message. |
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if (strncasecmp(achBuffer, "WRN:", 4) == 0) |
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ret = LSCP_WARNING; |
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else if (strncasecmp(achBuffer, "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 (iResult < 1 && strncasecmp(achBuffer, "OK[", 3) == 0) { |
197 |
// Parse the OK message, get the return string under brackets... |
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pszToken = lscp_strtok(achBuffer, pszSeps, &(pch)); |
199 |
if (pszToken) |
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pszResult = lscp_strtok(NULL, pszSeps, &(pch)); |
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} else { |
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// It can be specially long response... |
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cchResult += sizeof(achBuffer); |
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pszResult = malloc(cchResult + 1); |
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pszResult[0] = (char) 0; |
206 |
if (pszBuffer) { |
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strcat(pszResult, pszBuffer); |
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free(pszBuffer); |
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} |
210 |
strcat(pszResult, achBuffer); |
211 |
pszBuffer = pszResult; |
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pszResult = NULL; |
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// Check for correct end-of-transmission... |
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// Depending whether its single or multi-line we'll |
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// flag end-of-transmission... |
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cchBuffer = strlen(pszBuffer); |
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if (cchBuffer >= 2 |
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&& pszBuffer[cchBuffer - 1] == '\n' |
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&& pszBuffer[cchBuffer - 2] == '\r' |
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&& (iResult < 1 || (cchBuffer >= 3 |
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&& pszBuffer[cchBuffer - 3] == '.'))) { |
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// Get rid of the trailling dot and CRLF anyway... |
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while (cchBuffer > 0 && ( |
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pszBuffer[cchBuffer - 1] == '\r' || |
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pszBuffer[cchBuffer - 1] == '\n' || |
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pszBuffer[cchBuffer - 1] == '.')) |
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cchBuffer--; |
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pszBuffer[cchBuffer] = (char) 0; |
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pszResult = pszBuffer; |
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} |
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} |
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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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// Get rid of the CRLF anyway... |
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while (cchBuffer > 0 && ( |
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achBuffer[cchBuffer - 1] == '\r' || |
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achBuffer[cchBuffer - 1] == '\n')) |
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achBuffer[--cchBuffer] = (char) 0; |
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// Parse the error/warning message, skip first colon... |
240 |
pszToken = lscp_strtok(achBuffer, pszSeps, &(pch)); |
241 |
if (pszToken) { |
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// Get the error number... |
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pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
244 |
if (pszToken) { |
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iErrno = atoi(pszToken) + 100; |
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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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// We have trouble... |
256 |
pClient->iTimeoutCount++; |
257 |
// Fake a result message. |
258 |
pszResult = "Timeout during receive operation"; |
259 |
iErrno = (int) ret; |
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break; |
261 |
|
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case LSCP_QUIT: |
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// Fake a result message. |
264 |
pszResult = "Server terminated the connection"; |
265 |
iErrno = (int) ret; |
266 |
break; |
267 |
|
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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; |
273 |
} |
274 |
} |
275 |
|
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// Make the result official... |
277 |
lscp_client_set_result(pClient, pszResult, iErrno); |
278 |
|
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// Free long-buffer, if any... |
280 |
if (pszBuffer) |
281 |
free(pszBuffer); |
282 |
|
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return ret; |
284 |
} |
285 |
|
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|
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//------------------------------------------------------------------------- |
288 |
// Other general utility functions. |
289 |
|
290 |
// Trimming left spaces... |
291 |
char *lscp_ltrim ( char *psz ) |
292 |
{ |
293 |
while (isspace(*psz)) |
294 |
psz++; |
295 |
return psz; |
296 |
} |
297 |
|
298 |
// Unquote an in-split string. |
299 |
char *lscp_unquote ( char **ppsz, int dup ) |
300 |
{ |
301 |
char chQuote; |
302 |
char *psz = *ppsz; |
303 |
|
304 |
while (isspace(*psz)) |
305 |
++psz; |
306 |
if (*psz == '\"' || *psz == '\'') { |
307 |
chQuote = *psz++; |
308 |
while (isspace(*psz)) |
309 |
++psz; |
310 |
if (dup) |
311 |
psz = strdup(psz); |
312 |
*ppsz = psz; |
313 |
if (*ppsz) { |
314 |
while (**ppsz && **ppsz != chQuote) |
315 |
++(*ppsz); |
316 |
if (**ppsz) { |
317 |
while (isspace(*(*ppsz - 1)) && *ppsz > psz) |
318 |
--(*ppsz); |
319 |
*(*ppsz)++ = (char) 0; |
320 |
} |
321 |
} |
322 |
} |
323 |
else if (dup) { |
324 |
psz = strdup(psz); |
325 |
*ppsz = psz; |
326 |
} |
327 |
|
328 |
return psz; |
329 |
} |
330 |
|
331 |
// Unquote and make a duplicate of an in-split string. |
332 |
void lscp_unquote_dup ( char **ppszDst, char **ppszSrc ) |
333 |
{ |
334 |
// Free desteny string, if already there. |
335 |
if (*ppszDst) |
336 |
free(*ppszDst); |
337 |
*ppszDst = NULL; |
338 |
// Unquote and duplicate. |
339 |
if (*ppszSrc) |
340 |
*ppszDst = lscp_unquote(ppszSrc, 1); |
341 |
} |
342 |
|
343 |
|
344 |
// Custom tokenizer. |
345 |
char *lscp_strtok ( char *pchBuffer, const char *pszSeps, char **ppch ) |
346 |
{ |
347 |
char *pszToken; |
348 |
|
349 |
if (pchBuffer == NULL) |
350 |
pchBuffer = *ppch; |
351 |
|
352 |
pchBuffer += strspn(pchBuffer, pszSeps); |
353 |
if (*pchBuffer == '\0') |
354 |
return NULL; |
355 |
|
356 |
pszToken = pchBuffer; |
357 |
pchBuffer = strpbrk(pszToken, pszSeps); |
358 |
if (pchBuffer == NULL) { |
359 |
*ppch = strchr(pszToken, '\0'); |
360 |
} else { |
361 |
*pchBuffer = '\0'; |
362 |
*ppch = pchBuffer + 1; |
363 |
while (**ppch && strchr(pszSeps, **ppch)) |
364 |
(*ppch)++; |
365 |
} |
366 |
|
367 |
return pszToken; |
368 |
} |
369 |
|
370 |
|
371 |
// Split a comma separated string into a null terminated array of strings. |
372 |
char **lscp_szsplit_create ( const char *pszCsv, const char *pszSeps ) |
373 |
{ |
374 |
char *pszHead, *pch; |
375 |
int iSize, i, j, cchSeps; |
376 |
char **ppszSplit, **ppszNewSplit; |
377 |
|
378 |
// Initial size is one chunk away. |
379 |
iSize = LSCP_SPLIT_CHUNK1; |
380 |
// Allocate and split... |
381 |
ppszSplit = (char **) malloc(iSize * sizeof(char *)); |
382 |
if (ppszSplit == NULL) |
383 |
return NULL; |
384 |
|
385 |
// Make a copy of the original string. |
386 |
i = 0; |
387 |
pszHead = (char *) pszCsv; |
388 |
if ((ppszSplit[i++] = lscp_unquote(&pszHead, 1)) == NULL) { |
389 |
free(ppszSplit); |
390 |
return NULL; |
391 |
} |
392 |
|
393 |
// Go on for it... |
394 |
cchSeps = strlen(pszSeps); |
395 |
while ((pch = strpbrk(pszHead, pszSeps)) != NULL) { |
396 |
// Pre-advance to next item. |
397 |
pszHead = pch + cchSeps; |
398 |
// Trim and null terminate current item. |
399 |
while (isspace(*(pch - 1)) && pch > ppszSplit[0]) |
400 |
--pch; |
401 |
*pch = (char) 0; |
402 |
// Make it official. |
403 |
ppszSplit[i] = lscp_unquote(&pszHead, 0); |
404 |
// Do we need to grow? |
405 |
if (++i >= iSize) { |
406 |
// Yes, but only grow in chunks. |
407 |
iSize += LSCP_SPLIT_CHUNK1; |
408 |
// Allocate and copy to new split array. |
409 |
ppszNewSplit = (char **) malloc(iSize * sizeof(char *)); |
410 |
if (ppszNewSplit) { |
411 |
for (j = 0; j < i; j++) |
412 |
ppszNewSplit[j] = ppszSplit[j]; |
413 |
free(ppszSplit); |
414 |
ppszSplit = ppszNewSplit; |
415 |
} |
416 |
} |
417 |
} |
418 |
|
419 |
// NULL terminate split array. |
420 |
for ( ; i < iSize; i++) |
421 |
ppszSplit[i] = NULL; |
422 |
|
423 |
return ppszSplit; |
424 |
} |
425 |
|
426 |
|
427 |
// Free allocated memory of a legal null terminated array of strings. |
428 |
void lscp_szsplit_destroy ( char **ppszSplit ) |
429 |
{ |
430 |
// Our split string is always the first item, if any. |
431 |
if (ppszSplit && ppszSplit[0]) |
432 |
free(ppszSplit[0]); |
433 |
// Now free the array itself. |
434 |
if (ppszSplit) |
435 |
free(ppszSplit); |
436 |
} |
437 |
|
438 |
|
439 |
#ifdef LSCP_SZSPLIT_COUNT |
440 |
|
441 |
// Return the number of items of a null terminated array of strings. |
442 |
int lscp_szsplit_count ( char **ppszSplit ) |
443 |
{ |
444 |
int i = 0; |
445 |
while (ppszSplit && ppszSplit[i]) |
446 |
i++; |
447 |
return i; |
448 |
} |
449 |
|
450 |
// Return the allocated number of items of a splitted string array. |
451 |
int lscp_szsplit_size ( char **ppszSplit ) |
452 |
{ |
453 |
return LSCP_SPLIT_SIZE(lscp_szsplit_count(ppszSplit)); |
454 |
} |
455 |
|
456 |
#endif // LSCP_SZSPLIT_COUNT |
457 |
|
458 |
|
459 |
// Split a comma separated string into a -1 terminated array of positive integers. |
460 |
int *lscp_isplit_create ( const char *pszCsv, const char *pszSeps ) |
461 |
{ |
462 |
char *pchHead, *pch; |
463 |
int iSize, i, j, cchSeps; |
464 |
int *piSplit, *piNewSplit; |
465 |
|
466 |
// Get it clean first. |
467 |
pchHead = lscp_ltrim((char *) pszCsv); |
468 |
if (*pchHead == (char) 0) |
469 |
return NULL; |
470 |
|
471 |
// Initial size is one chunk away. |
472 |
iSize = LSCP_SPLIT_CHUNK1; |
473 |
// Allocate and split... |
474 |
piSplit = (int *) malloc(iSize * sizeof(int)); |
475 |
if (piSplit == NULL) |
476 |
return NULL; |
477 |
|
478 |
// Make a copy of the original string. |
479 |
i = 0; |
480 |
if ((piSplit[i++] = atoi(pchHead)) < 0) { |
481 |
free(piSplit); |
482 |
return NULL; |
483 |
} |
484 |
|
485 |
// Go on for it... |
486 |
cchSeps = strlen(pszSeps); |
487 |
while ((pch = strpbrk(pchHead, pszSeps)) != NULL) { |
488 |
// Pre-advance to next item. |
489 |
pchHead = pch + cchSeps; |
490 |
// Make it official. |
491 |
piSplit[i] = atoi(pchHead); |
492 |
// Do we need to grow? |
493 |
if (++i >= iSize) { |
494 |
// Yes, but only grow in chunks. |
495 |
iSize += LSCP_SPLIT_CHUNK1; |
496 |
// Allocate and copy to new split array. |
497 |
piNewSplit = (int *) malloc(iSize * sizeof(int)); |
498 |
if (piNewSplit) { |
499 |
for (j = 0; j < i; j++) |
500 |
piNewSplit[j] = piSplit[j]; |
501 |
free(piSplit); |
502 |
piSplit = piNewSplit; |
503 |
} |
504 |
} |
505 |
} |
506 |
|
507 |
// NULL terminate split array. |
508 |
for ( ; i < iSize; i++) |
509 |
piSplit[i] = -1; |
510 |
|
511 |
return piSplit; |
512 |
} |
513 |
|
514 |
|
515 |
// Destroy a integer splitted array. |
516 |
void lscp_isplit_destroy ( int *piSplit ) |
517 |
{ |
518 |
if (piSplit) |
519 |
free(piSplit); |
520 |
} |
521 |
|
522 |
|
523 |
#ifdef LSCP_ISPLIT_COUNT |
524 |
|
525 |
// Compute a string list valid item count. |
526 |
int lscp_isplit_count ( int *piSplit ) |
527 |
{ |
528 |
int i = 0; |
529 |
while (piSplit && piSplit[i] >= 0) |
530 |
i++; |
531 |
return i; |
532 |
} |
533 |
|
534 |
// Compute a string list size. |
535 |
int lscp_isplit_size ( int *piSplit ) |
536 |
{ |
537 |
return LSCP_SPLIT_SIZE(lscp_isplit_count(piSplit)); |
538 |
} |
539 |
|
540 |
#endif // LSCP_ISPLIT_COUNT |
541 |
|
542 |
|
543 |
// Split a string into a null terminated array of parameter items. |
544 |
lscp_param_t *lscp_psplit_create ( const char *pszCsv, const char *pszSeps1, const char *pszSeps2 ) |
545 |
{ |
546 |
char *pszHead, *pch; |
547 |
int iSize, i, j, cchSeps1, cchSeps2; |
548 |
lscp_param_t *ppSplit, *ppNewSplit; |
549 |
|
550 |
pszHead = strdup(pszCsv); |
551 |
if (pszHead == NULL) |
552 |
return NULL; |
553 |
|
554 |
iSize = LSCP_SPLIT_CHUNK1; |
555 |
ppSplit = (lscp_param_t *) malloc(iSize * sizeof(lscp_param_t)); |
556 |
if (ppSplit == NULL) { |
557 |
free(pszHead); |
558 |
return NULL; |
559 |
} |
560 |
|
561 |
cchSeps1 = strlen(pszSeps1); |
562 |
cchSeps2 = strlen(pszSeps2); |
563 |
|
564 |
i = 0; |
565 |
while ((pch = strpbrk(pszHead, pszSeps1)) != NULL) { |
566 |
ppSplit[i].key = pszHead; |
567 |
pszHead = pch + cchSeps1; |
568 |
*pch = (char) 0; |
569 |
ppSplit[i].value = lscp_unquote(&pszHead, 0); |
570 |
if ((pch = strpbrk(pszHead, pszSeps2)) != NULL) { |
571 |
pszHead = pch + cchSeps2; |
572 |
*pch = (char) 0; |
573 |
} |
574 |
if (++i >= iSize) { |
575 |
iSize += LSCP_SPLIT_CHUNK1; |
576 |
ppNewSplit = (lscp_param_t *) malloc(iSize * sizeof(lscp_param_t)); |
577 |
if (ppNewSplit) { |
578 |
for (j = 0; j < i; j++) { |
579 |
ppNewSplit[j].key = ppSplit[j].key; |
580 |
ppNewSplit[j].value = ppSplit[j].value; |
581 |
} |
582 |
free(ppSplit); |
583 |
ppSplit = ppNewSplit; |
584 |
} |
585 |
} |
586 |
} |
587 |
|
588 |
if (i < 1) |
589 |
free(pszHead); |
590 |
|
591 |
for ( ; i < iSize; i++) { |
592 |
ppSplit[i].key = NULL; |
593 |
ppSplit[i].value = NULL; |
594 |
} |
595 |
|
596 |
return ppSplit; |
597 |
} |
598 |
|
599 |
|
600 |
// Destroy a parameter list array. |
601 |
void lscp_psplit_destroy ( lscp_param_t *ppSplit ) |
602 |
{ |
603 |
if (ppSplit && ppSplit[0].key) |
604 |
free(ppSplit[0].key); |
605 |
if (ppSplit) |
606 |
free(ppSplit); |
607 |
} |
608 |
|
609 |
|
610 |
#ifdef LSCP_PSPLIT_COUNT |
611 |
|
612 |
// Compute a parameter list valid item count. |
613 |
int lscp_psplit_count ( lscp_param_t *ppSplit ) |
614 |
{ |
615 |
int i = 0; |
616 |
while (ppSplit && ppSplit[i].key) |
617 |
i++; |
618 |
return i; |
619 |
} |
620 |
|
621 |
// Compute a parameter list size. |
622 |
int lscp_psplit_size ( lscp_param_t *ppSplit ) |
623 |
{ |
624 |
return LSCP_SPLIT_SIZE(lscp_psplit_count(ppSplit)); |
625 |
} |
626 |
|
627 |
#endif // LSCP_PSPLIT_COUNT |
628 |
|
629 |
|
630 |
// Allocate a parameter list, optionally copying an existing one. |
631 |
void lscp_plist_alloc (lscp_param_t **ppList) |
632 |
{ |
633 |
lscp_param_t *pParams; |
634 |
int iSize, i; |
635 |
|
636 |
if (ppList) { |
637 |
iSize = LSCP_SPLIT_CHUNK1; |
638 |
pParams = (lscp_param_t *) malloc(iSize * sizeof(lscp_param_t)); |
639 |
if (pParams) { |
640 |
for (i = 0 ; i < iSize; i++) { |
641 |
pParams[i].key = NULL; |
642 |
pParams[i].value = NULL; |
643 |
} |
644 |
} |
645 |
*ppList = pParams; |
646 |
} |
647 |
} |
648 |
|
649 |
|
650 |
// Destroy a parameter list, including all it's contents. |
651 |
void lscp_plist_free ( lscp_param_t **ppList ) |
652 |
{ |
653 |
lscp_param_t *pParams; |
654 |
int i; |
655 |
|
656 |
if (ppList) { |
657 |
if (*ppList) { |
658 |
pParams = *ppList; |
659 |
for (i = 0; pParams && pParams[i].key; i++) { |
660 |
free(pParams[i].key); |
661 |
free(pParams[i].value); |
662 |
} |
663 |
free(pParams); |
664 |
} |
665 |
*ppList = NULL; |
666 |
} |
667 |
} |
668 |
|
669 |
|
670 |
// Add an item to a parameter list, growing it as fit. |
671 |
void lscp_plist_append ( lscp_param_t **ppList, const char *pszKey, const char *pszValue ) |
672 |
{ |
673 |
lscp_param_t *pParams; |
674 |
lscp_param_t *pNewParams; |
675 |
int iSize, iNewSize; |
676 |
int i = 0; |
677 |
|
678 |
if (ppList && *ppList) { |
679 |
pParams = *ppList; |
680 |
while (pParams[i].key) { |
681 |
if (strcasecmp(pParams[i].key, pszKey) == 0) { |
682 |
if (pParams[i].value) |
683 |
free(pParams[i].value); |
684 |
pParams[i].value = strdup(pszValue); |
685 |
return; |
686 |
} |
687 |
i++; |
688 |
} |
689 |
iSize = LSCP_SPLIT_SIZE(i); |
690 |
pParams[i].key = strdup(pszKey); |
691 |
pParams[i].value = strdup(pszValue); |
692 |
if (++i >= iSize) { |
693 |
iNewSize = iSize + LSCP_SPLIT_CHUNK1; |
694 |
pNewParams = (lscp_param_t *) malloc(iNewSize * sizeof(lscp_param_t)); |
695 |
for (i = 0; i < iSize; i++) { |
696 |
pNewParams[i].key = pParams[i].key; |
697 |
pNewParams[i].value = pParams[i].value; |
698 |
} |
699 |
for ( ; i < iNewSize; i++) { |
700 |
pNewParams[i].key = NULL; |
701 |
pNewParams[i].value = NULL; |
702 |
} |
703 |
free(pParams); |
704 |
*ppList = pNewParams; |
705 |
} |
706 |
} |
707 |
} |
708 |
|
709 |
#ifdef LSCP_PLIST_COUNT |
710 |
|
711 |
// Compute a parameter list valid item count. |
712 |
int lscp_plist_count ( lscp_param_t **ppList ) |
713 |
{ |
714 |
lscp_param_t *pParams; |
715 |
int i = 0; |
716 |
if (ppList && *ppList) { |
717 |
pParams = *ppList; |
718 |
while (pParams[i].key) |
719 |
i++; |
720 |
} |
721 |
return i; |
722 |
} |
723 |
|
724 |
// Compute the legal parameter list size. |
725 |
int lscp_plist_size ( lscp_param_t **ppList ) |
726 |
{ |
727 |
return LSCP_SPLIT_SIZE(lscp_plist_count(ppList)); |
728 |
} |
729 |
|
730 |
#endif // LSCP_PLIST_COUNT |
731 |
|
732 |
|
733 |
// Split a string into an array of MIDI instrument triplets. |
734 |
lscp_midi_instrument_t *lscp_midi_instruments_create ( const char *pszCsv ) |
735 |
{ |
736 |
char *pchHead, *pch; |
737 |
int iSize, i, j, k; |
738 |
lscp_midi_instrument_t *pInstrs; |
739 |
lscp_midi_instrument_t *pNewInstrs; |
740 |
|
741 |
// Get it clean first. |
742 |
pchHead = lscp_ltrim((char *) pszCsv); |
743 |
if (*pchHead == (char) 0) |
744 |
return NULL; |
745 |
|
746 |
// Initial size is one chunk away. |
747 |
iSize = LSCP_SPLIT_CHUNK1; |
748 |
// Allocate and split... |
749 |
pInstrs = (lscp_midi_instrument_t *) malloc(iSize * sizeof(lscp_midi_instrument_t)); |
750 |
if (pInstrs == NULL) |
751 |
return NULL; |
752 |
|
753 |
// Go on for it... |
754 |
i = 0; |
755 |
k = 0; |
756 |
|
757 |
while ((pch = strpbrk(pchHead, "{,}")) != NULL) { |
758 |
// Pre-advance to next item. |
759 |
switch (*pch) { |
760 |
case '{': |
761 |
pchHead = pch + 1; |
762 |
if (k == 0) { |
763 |
pInstrs[i].map = atoi(pchHead); |
764 |
k++; |
765 |
} |
766 |
break; |
767 |
case ',': |
768 |
pchHead = pch + 1; |
769 |
if (k == 1) { |
770 |
pInstrs[i].bank = atoi(pchHead); |
771 |
k++; |
772 |
} |
773 |
else |
774 |
if (k == 2) { |
775 |
pInstrs[i].prog = atoi(pchHead); |
776 |
k++; |
777 |
} |
778 |
break; |
779 |
case '}': |
780 |
pchHead = pch + 1; |
781 |
k = 0; |
782 |
break; |
783 |
} |
784 |
// Do we need to grow? |
785 |
if (k == 3 && ++i >= iSize) { |
786 |
// Yes, but only grow in chunks. |
787 |
iSize += LSCP_SPLIT_CHUNK1; |
788 |
// Allocate and copy to new split array. |
789 |
pNewInstrs = (lscp_midi_instrument_t *) malloc(iSize * sizeof(lscp_midi_instrument_t)); |
790 |
if (pNewInstrs) { |
791 |
for (j = 0; j < i; j++) { |
792 |
pNewInstrs[j].map = pInstrs[j].map; |
793 |
pNewInstrs[j].bank = pInstrs[j].bank; |
794 |
pNewInstrs[j].prog = pInstrs[j].prog; |
795 |
} |
796 |
free(pInstrs); |
797 |
pInstrs = pNewInstrs; |
798 |
} |
799 |
} |
800 |
} |
801 |
|
802 |
// Special terminate split array. |
803 |
for ( ; i < iSize; i++) { |
804 |
pInstrs[i].map = -1; |
805 |
pInstrs[i].bank = -1; |
806 |
pInstrs[i].prog = -1; |
807 |
} |
808 |
|
809 |
return pInstrs; |
810 |
} |
811 |
|
812 |
// Destroy a MIDI instrument triplet array. |
813 |
void lscp_midi_instruments_destroy ( lscp_midi_instrument_t *pInstrs ) |
814 |
{ |
815 |
if (pInstrs) |
816 |
free(pInstrs); |
817 |
} |
818 |
|
819 |
#ifdef LSCP_MIDI_INSTRUMENTS_COUNT |
820 |
|
821 |
// Compute a MIDI instrument array item count. |
822 |
int lscp_midi_instruments_count ( lscp_midi_instrument_t *pInstrs ) |
823 |
{ |
824 |
int i = 0; |
825 |
while (pInstrs && pInstrs[i].program >= 0) |
826 |
i++; |
827 |
return i; |
828 |
} |
829 |
|
830 |
// Compute a MIDI instrument array size. |
831 |
int lscp_midi_instruments_size ( lscp_midi_instrument_t *pInstrs ) |
832 |
{ |
833 |
return LSCP_SPLIT_SIZE(lscp_midi_instruments_count(pInstrs)); |
834 |
} |
835 |
|
836 |
#endif // LSCP_MIDI_INSTRUMENTS_COUNT |
837 |
|
838 |
|
839 |
//------------------------------------------------------------------------- |
840 |
// Server info struct helper functions. |
841 |
|
842 |
void lscp_server_info_init ( lscp_server_info_t *pServerInfo ) |
843 |
{ |
844 |
pServerInfo->description = NULL; |
845 |
pServerInfo->version = NULL; |
846 |
pServerInfo->protocol_version = NULL; |
847 |
} |
848 |
|
849 |
void lscp_server_info_free ( lscp_server_info_t *pServerInfo ) |
850 |
{ |
851 |
if (pServerInfo->description) |
852 |
free(pServerInfo->description); |
853 |
if (pServerInfo->version) |
854 |
free(pServerInfo->version); |
855 |
if (pServerInfo->protocol_version) |
856 |
free(pServerInfo->protocol_version); |
857 |
} |
858 |
|
859 |
void lscp_server_info_reset ( lscp_server_info_t *pServerInfo ) |
860 |
{ |
861 |
lscp_server_info_free(pServerInfo); |
862 |
lscp_server_info_init(pServerInfo); |
863 |
} |
864 |
|
865 |
|
866 |
//------------------------------------------------------------------------- |
867 |
// Engine info struct helper functions. |
868 |
|
869 |
void lscp_engine_info_init ( lscp_engine_info_t *pEngineInfo ) |
870 |
{ |
871 |
pEngineInfo->description = NULL; |
872 |
pEngineInfo->version = NULL; |
873 |
} |
874 |
|
875 |
void lscp_engine_info_free ( lscp_engine_info_t *pEngineInfo ) |
876 |
{ |
877 |
if (pEngineInfo->description) |
878 |
free(pEngineInfo->description); |
879 |
if (pEngineInfo->version) |
880 |
free(pEngineInfo->version); |
881 |
} |
882 |
|
883 |
void lscp_engine_info_reset ( lscp_engine_info_t *pEngineInfo ) |
884 |
{ |
885 |
lscp_engine_info_free(pEngineInfo); |
886 |
lscp_engine_info_init(pEngineInfo); |
887 |
} |
888 |
|
889 |
|
890 |
//------------------------------------------------------------------------- |
891 |
// Channel info struct helper functions. |
892 |
|
893 |
void lscp_channel_info_init ( lscp_channel_info_t *pChannelInfo ) |
894 |
{ |
895 |
pChannelInfo->engine_name = NULL; |
896 |
pChannelInfo->audio_device = 0; |
897 |
pChannelInfo->audio_channels = 0; |
898 |
pChannelInfo->audio_routing = NULL; |
899 |
pChannelInfo->instrument_file = NULL; |
900 |
pChannelInfo->instrument_nr = 0; |
901 |
pChannelInfo->instrument_name = NULL; |
902 |
pChannelInfo->instrument_status = 0; |
903 |
pChannelInfo->midi_device = 0; |
904 |
pChannelInfo->midi_port = 0; |
905 |
pChannelInfo->midi_channel = 0; |
906 |
pChannelInfo->midi_map = 0; |
907 |
pChannelInfo->volume = 0.0; |
908 |
pChannelInfo->mute = 0; |
909 |
pChannelInfo->solo = 0; |
910 |
} |
911 |
|
912 |
void lscp_channel_info_free ( lscp_channel_info_t *pChannelInfo ) |
913 |
{ |
914 |
if (pChannelInfo->engine_name) |
915 |
free(pChannelInfo->engine_name); |
916 |
if (pChannelInfo->audio_routing) |
917 |
lscp_isplit_destroy(pChannelInfo->audio_routing); |
918 |
if (pChannelInfo->instrument_file) |
919 |
free(pChannelInfo->instrument_file); |
920 |
if (pChannelInfo->instrument_name) |
921 |
free(pChannelInfo->instrument_name); |
922 |
} |
923 |
|
924 |
void lscp_channel_info_reset ( lscp_channel_info_t *pChannelInfo ) |
925 |
{ |
926 |
lscp_channel_info_free(pChannelInfo); |
927 |
lscp_channel_info_init(pChannelInfo); |
928 |
} |
929 |
|
930 |
|
931 |
//------------------------------------------------------------------------- |
932 |
// Driver info struct functions. |
933 |
|
934 |
void lscp_driver_info_init ( lscp_driver_info_t *pDriverInfo ) |
935 |
{ |
936 |
pDriverInfo->description = NULL; |
937 |
pDriverInfo->version = NULL; |
938 |
pDriverInfo->parameters = NULL; |
939 |
} |
940 |
|
941 |
void lscp_driver_info_free ( lscp_driver_info_t *pDriverInfo ) |
942 |
{ |
943 |
if (pDriverInfo->description) |
944 |
free(pDriverInfo->description); |
945 |
if (pDriverInfo->version) |
946 |
free(pDriverInfo->version); |
947 |
lscp_szsplit_destroy(pDriverInfo->parameters); |
948 |
} |
949 |
|
950 |
void lscp_driver_info_reset ( lscp_driver_info_t *pDriverInfo ) |
951 |
{ |
952 |
lscp_driver_info_free(pDriverInfo); |
953 |
lscp_driver_info_init(pDriverInfo); |
954 |
} |
955 |
|
956 |
|
957 |
//------------------------------------------------------------------------- |
958 |
// Device info struct functions. |
959 |
|
960 |
void lscp_device_info_init ( lscp_device_info_t *pDeviceInfo ) |
961 |
{ |
962 |
pDeviceInfo->driver = NULL; |
963 |
lscp_plist_alloc(&(pDeviceInfo->params)); |
964 |
} |
965 |
|
966 |
void lscp_device_info_free ( lscp_device_info_t *pDeviceInfo ) |
967 |
{ |
968 |
if (pDeviceInfo->driver) |
969 |
free(pDeviceInfo->driver); |
970 |
lscp_plist_free(&(pDeviceInfo->params)); |
971 |
} |
972 |
|
973 |
void lscp_device_info_reset ( lscp_device_info_t *pDeviceInfo ) |
974 |
{ |
975 |
lscp_device_info_free(pDeviceInfo); |
976 |
lscp_device_info_init(pDeviceInfo); |
977 |
} |
978 |
|
979 |
|
980 |
//------------------------------------------------------------------------- |
981 |
// Device channel/port info struct functions. |
982 |
|
983 |
void lscp_device_port_info_init ( lscp_device_port_info_t *pDevicePortInfo ) |
984 |
{ |
985 |
pDevicePortInfo->name = NULL; |
986 |
lscp_plist_alloc(&(pDevicePortInfo->params)); |
987 |
} |
988 |
|
989 |
void lscp_device_port_info_free ( lscp_device_port_info_t *pDevicePortInfo ) |
990 |
{ |
991 |
if (pDevicePortInfo->name) |
992 |
free(pDevicePortInfo->name); |
993 |
lscp_plist_free(&(pDevicePortInfo->params)); |
994 |
} |
995 |
|
996 |
void lscp_device_port_info_reset ( lscp_device_port_info_t *pDevicePortInfo ) |
997 |
{ |
998 |
lscp_device_port_info_free(pDevicePortInfo); |
999 |
lscp_device_port_info_init(pDevicePortInfo); |
1000 |
} |
1001 |
|
1002 |
|
1003 |
//------------------------------------------------------------------------- |
1004 |
// Parameter struct helper functions. |
1005 |
|
1006 |
void lscp_param_info_init ( lscp_param_info_t *pParamInfo ) |
1007 |
{ |
1008 |
pParamInfo->type = LSCP_TYPE_NONE; |
1009 |
pParamInfo->description = NULL; |
1010 |
pParamInfo->mandatory = 0; |
1011 |
pParamInfo->fix = 0; |
1012 |
pParamInfo->multiplicity = 0; |
1013 |
pParamInfo->depends = NULL; |
1014 |
pParamInfo->defaultv = NULL; |
1015 |
pParamInfo->range_min = NULL; |
1016 |
pParamInfo->range_max = NULL; |
1017 |
pParamInfo->possibilities = NULL; |
1018 |
} |
1019 |
|
1020 |
void lscp_param_info_free ( lscp_param_info_t *pParamInfo ) |
1021 |
{ |
1022 |
if (pParamInfo->description) |
1023 |
free(pParamInfo->description); |
1024 |
lscp_szsplit_destroy(pParamInfo->depends); |
1025 |
if (pParamInfo->defaultv) |
1026 |
free(pParamInfo->defaultv); |
1027 |
if (pParamInfo->range_min) |
1028 |
free(pParamInfo->range_min); |
1029 |
if (pParamInfo->range_max) |
1030 |
free(pParamInfo->range_max); |
1031 |
lscp_szsplit_destroy(pParamInfo->possibilities); |
1032 |
} |
1033 |
|
1034 |
void lscp_param_info_reset ( lscp_param_info_t *pParamInfo ) |
1035 |
{ |
1036 |
lscp_param_info_free(pParamInfo); |
1037 |
lscp_param_info_init(pParamInfo); |
1038 |
} |
1039 |
|
1040 |
|
1041 |
//------------------------------------------------------------------------- |
1042 |
// Concatenate a parameter list (key='value'...) into a string, |
1043 |
// appending a crlf terminator. |
1044 |
|
1045 |
int lscp_param_concat ( char *pszBuffer, int cchMaxBuffer, lscp_param_t *pParams ) |
1046 |
{ |
1047 |
int cchBuffer, cchParam, i; |
1048 |
|
1049 |
if (pszBuffer == NULL) |
1050 |
return 0; |
1051 |
|
1052 |
cchBuffer = strlen(pszBuffer); |
1053 |
for (i = 0; pParams && pParams[i].key && pParams[i].value; i++) { |
1054 |
cchParam = strlen(pParams[i].key) + strlen(pParams[i].value) + 4; |
1055 |
if (cchBuffer + cchParam + 2 < cchMaxBuffer) { |
1056 |
sprintf(pszBuffer + cchBuffer, " %s='%s'", pParams[i].key, pParams[i].value); |
1057 |
cchBuffer += cchParam; |
1058 |
} |
1059 |
} |
1060 |
|
1061 |
if (cchBuffer + 2 < cchMaxBuffer) { |
1062 |
pszBuffer[cchBuffer++] = '\r'; |
1063 |
pszBuffer[cchBuffer++] = '\n'; |
1064 |
pszBuffer[cchBuffer ] = (char) 0; |
1065 |
} |
1066 |
|
1067 |
return cchBuffer; |
1068 |
} |
1069 |
|
1070 |
|
1071 |
//------------------------------------------------------------------------- |
1072 |
// Effect struct helper functions. |
1073 |
|
1074 |
void lscp_fxsend_info_init ( lscp_fxsend_info_t *pFxSendInfo ) |
1075 |
{ |
1076 |
pFxSendInfo->name = NULL; |
1077 |
pFxSendInfo->midi_controller = 0; |
1078 |
pFxSendInfo->audio_routing = NULL; |
1079 |
pFxSendInfo->level = 0.0f; |
1080 |
} |
1081 |
|
1082 |
void lscp_fxsend_info_free ( lscp_fxsend_info_t *pFxSendInfo ) |
1083 |
{ |
1084 |
if (pFxSendInfo->name) |
1085 |
free(pFxSendInfo->name); |
1086 |
if (pFxSendInfo->audio_routing) |
1087 |
lscp_isplit_destroy(pFxSendInfo->audio_routing); |
1088 |
} |
1089 |
|
1090 |
void lscp_fxsend_info_reset (lscp_fxsend_info_t *pFxSendInfo ) |
1091 |
{ |
1092 |
lscp_fxsend_info_free(pFxSendInfo); |
1093 |
lscp_fxsend_info_init(pFxSendInfo); |
1094 |
} |
1095 |
|
1096 |
|
1097 |
//------------------------------------------------------------------------- |
1098 |
// MIDI instrument info struct helper functions. |
1099 |
|
1100 |
void lscp_midi_instrument_info_init ( lscp_midi_instrument_info_t *pInstrInfo ) |
1101 |
{ |
1102 |
pInstrInfo->name = NULL; |
1103 |
pInstrInfo->engine_name = NULL; |
1104 |
pInstrInfo->instrument_file = NULL; |
1105 |
pInstrInfo->instrument_nr = 0; |
1106 |
pInstrInfo->instrument_name = NULL; |
1107 |
pInstrInfo->load_mode = LSCP_LOAD_DEFAULT; |
1108 |
pInstrInfo->volume = 0.0; |
1109 |
} |
1110 |
|
1111 |
void lscp_midi_instrument_info_free ( lscp_midi_instrument_info_t *pInstrInfo ) |
1112 |
{ |
1113 |
if (pInstrInfo->name) |
1114 |
free(pInstrInfo->name); |
1115 |
if (pInstrInfo->engine_name) |
1116 |
free(pInstrInfo->engine_name); |
1117 |
if (pInstrInfo->instrument_file) |
1118 |
free(pInstrInfo->instrument_file); |
1119 |
if (pInstrInfo->instrument_name) |
1120 |
free(pInstrInfo->instrument_name); |
1121 |
} |
1122 |
|
1123 |
void lscp_midi_instrument_info_reset ( lscp_midi_instrument_info_t *pInstrInfo ) |
1124 |
{ |
1125 |
lscp_midi_instrument_info_free(pInstrInfo); |
1126 |
lscp_midi_instrument_info_init(pInstrInfo); |
1127 |
} |
1128 |
|
1129 |
|
1130 |
// end of common.c |