/* $Id$ * $URL$ * * plugin template * * Copyright (C) 2003 Michael Reinelt * Copyright (C) 2004, 2005, 2006, 2007, 2008 The LCD4Linux Team * * This file is part of LCD4Linux. * * LCD4Linux is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * LCD4Linux is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ /* * exported functions: * * int plugin_init_sample (void) * adds various functions * */ /* define the include files you need */ #include "config.h" #include #include #include /* these should always be included */ #include "debug.h" #include "plugin.h" #ifdef WITH_DMALLOC #include #endif /* sample function 'mul2' */ /* takes one argument, a number */ /* multiplies the number by 2.0 */ /* Note: all local functions should be declared 'static' */ static void my_mul2(RESULT * result, RESULT * arg1) { double param; double value; /* Get Parameter */ /* R2N stands for 'Result to Number' */ param = R2N(arg1); /* calculate value */ value = param * 2.0; /* store result */ /* when called with R_NUMBER, it assumes the */ /* next parameter to be a pointer to double */ SetResult(&result, R_NUMBER, &value); } /* sample function 'mul3' */ /* takes one argument, a number */ /* multiplies the number by 3.0 */ /* same as 'mul2', but shorter */ static void my_mul3(RESULT * result, RESULT * arg1) { /* do it all in one line */ double value = R2N(arg1) * 3.0; /* store result */ SetResult(&result, R_NUMBER, &value); } /* sample function 'diff' */ /* takes two arguments, both numbers */ /* returns |a-b| */ static void my_diff(RESULT * result, RESULT * arg1, RESULT * arg2) { /* do it all in one line */ double value = R2N(arg1) - R2N(arg2); /* some more calculations... */ if (value < 0) value = -value; /* store result */ SetResult(&result, R_NUMBER, &value); } /* sample function 'answer' */ /* takes no argument! */ /* returns the answer to all questions */ static void my_answer(RESULT * result) { /* we have to declare a variable because */ /* SetResult needs a pointer */ double value = 42; /* store result */ SetResult(&result, R_NUMBER, &value); } /* sample function 'length' */ /* takes one argument, a string */ /* returns the string length */ static void my_length(RESULT * result, RESULT * arg1) { /* Note #1: value *must* be double! */ /* Note #2: R2S stands for 'Result to String' */ double value = strlen(R2S(arg1)); /* store result */ SetResult(&result, R_NUMBER, &value); } /* sample function 'upcase' */ /* takes one argument, a string */ /* returns the string in upper case letters */ static void my_upcase(RESULT * result, RESULT * arg1) { char *value, *p; /* create a local copy of the argument */ /* Do *NOT* try to modify the original string! */ value = strdup(R2S(arg1)); /* process the string */ for (p = value; *p != '\0'; p++) *p = toupper(*p); /* store result */ /* when called with R_STRING, it assumes the */ /* next parameter to be a pointer to a string */ /* 'value' is already a char*, so use 'value', not '&value' */ SetResult(&result, R_STRING, value); /* free local copy again */ /* Note that SetResult() makes its own string copy */ free(value); } /* sample function 'cat' */ /* takes variable number of arguments, all strings */ /* returns all prameters concatenated */ static void my_concat(RESULT * result, int argc, RESULT * argv[]) { int i, len; char *value, *part; /* start with a empty string */ value = strdup(""); /* process all arguments */ for (i = 0; i < argc; i++) { part = R2S(argv[i]); len = strlen(value) + strlen(part); value = realloc(value, len + 1); strcat(value, part); } /* store result */ SetResult(&result, R_STRING, value); /* free local string */ free(value); } /* plugin initialization */ /* MUST NOT be declared 'static'! */ int plugin_init_sample(void) { /* register all our cool functions */ /* the second parameter is the number of arguments */ /* -1 stands for variable argument list */ AddFunction("sample::mul2", 1, my_mul2); AddFunction("sample::mul3", 1, my_mul3); AddFunction("sample::answer", 0, my_answer); AddFunction("sample::diff", 2, my_diff); AddFunction("sample::length", 1, my_length); AddFunction("sample::upcase", 1, my_upcase); AddFunction("sample::concat", -1, my_concat); return 0; } void plugin_exit_sample(void) { /* free any allocated memory */ /* close filedescriptors */ } () ported from volker_dev (r827)michael1-0/+2 2008-12-31handle config files with <CR><LF> (DOS line ending) ported from volker_dev (r...michael1-2/+6 2008-12-31netinfo plugin ported from volker_dev (r823)michael4-2/+255 2008-12-31format characters in qprintf() with optional length (r821) ported from volker...michael1-9/+63 2008-12-31short circuit evaluation ported from volker_dev (r820,r822,r824)michael1-8/+52 2008-12-31Fixes a buffer underrun error and possible array index issues by mcarey@...michael1-6/+13 2008-12-27ported r819 from volker_devmichael1-17/+21 2008-12-27ported and modified r818 from volker_devmichael3-11/+151 2008-12-27port r817 from volker_devmichael3-24/+944 2008-12-27ported (modified) r815 from voker_devmichael1-3/+23 2008-12-24cleanup & cosmeticsmichael5-22/+31 2008-12-24driver for the PHAnderson serial-to-HD44780 adapter boards by Nicolas Weillmichael5-5/+444 2008-12-24w1retap plugin by Jonathan Hudsonmichael7-0/+298 2008-12-24Enables/controls the backlight on the Pertelian LCD device by Jonathan Hudsonmichael1-10/+13 2008-12-23hddtemp plugin from Scott Bronsonmichael7-0/+343 2008-12-23keypad bug fixedmichael1-1/+1 2008-12-23patch from a.nielsen: inverted parport signals, support GPI on HD44780michael2-24/+89 2008-12-23indent runmichael1-4/+4 2008-11-25fix lcd4linux driver for multible onboard controllersmichux1-4/+4 2008-11-23fix automake - check for libftdimichux4-9/+173 2008-11-22update button_exec plugin - fix segfaultmichux1-3/+2 2008-11-22update fifo plugin - untestedmichux1-1/+1 2008-10-07Replace write to external variable usb_debug by calling usb_set_debug().bwalle7-16/+7 2008-10-06adding GPI to picoLCD for reading button events by Igor Mammedov <niallain@g...michael1-1/+22 2008-10-06properties fixedmichael11-3290/+2675 2008-10-05Rebuild auto-generated autoconf stuff due to last change in drivers.m4.bwalle3-2657/+3297 2008-10-05Add 'ULA200' driver when --with-drivers=all is specifiedbwalle1-0/+1 2008-09-14strftime_tz patch from Bernhard Wallemichael1-0/+11 2008-09-08strftime_tz() plugin by Bernhard Wallemichael1-0/+25 2008-09-03ULA200 driver by Bernhard Wallemichael7-2/+825 2008-09-03indentmichael1-4/+4 2008-08-31Increased the maximum bps to 230400, if defined in <termios.h>.sonic741-2/+7 2008-08-27git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@889 3ae390bd-cb1e-0410-...sonic741-18/+11 2008-08-27D4D updates by Svenmichael1-38/+60 2008-08-03driver for 4D Systems serial displays by Sven Killigmichael9-45/+846 2008-08-03signed/unsigned mismatchmichael1-3/+3 2008-07-26added command functionsmichux1-2/+130 2008-07-15added IRLCD driver by Jean-Philippe Civademichael10-5/+467 2008-07-15'autoreconf -f -i' run & config.rpath addedmichael8-370/+1617