diff options
Diffstat (limited to 'wodim/defaults.c')
| -rw-r--r-- | wodim/defaults.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/wodim/defaults.c b/wodim/defaults.c new file mode 100644 index 0000000..a09da6c --- /dev/null +++ b/wodim/defaults.c @@ -0,0 +1,139 @@ +/* + * Copyright 2006 Eduard Bloch + * + * This code emulates the interface of the original defaults.c file. However, + * it improves its behaviour and deals with corner cases: prepended and + * trailing spaces on variable and value, no requirement for using TABs + * anymore. No requirements to insert dummy values like -1 or "". + * + */ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program 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; see the file COPYING. If not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#include <mconfig.h> +#include <stdlib.h> +#include <stdio.h> +#include <deflts.h> +#include <ctype.h> +#include <string.h> + +#define CFGPATH "/etc/wodim.conf" +/* The better way would be exporting the meta functions to getnum.h or so */ +extern int getnum(char *arg, long *valp); + +void +cdr_defaults(char **p_dev_name, int *p_speed, long *p_fifosize, + char **p_drv_opts) +{ + char *t; /* tmp */ + int wc=0; + char loc[256], sSpeed[11], sFs[11], sOpts[81]; + char *devcand=NULL; + + cfg_open(CFGPATH); + + if(p_dev_name && *p_dev_name) + devcand=*p_dev_name; + else if(NULL!=(t=getenv("CDR_DEVICE"))) + devcand=t; + else if(NULL!=(t=cfg_get("CDR_DEVICE"))) + devcand=strdup(t); /* needs to use it as a key later, same stat. memory */ + + if(devcand && NULL != (t=cfg_get(devcand))) { + /* extract them now, may be used later */ + wc=sscanf(t, "%255s %10s %10s %80s", loc, sSpeed, sFs, sOpts); + } + + if(p_dev_name) { + if(wc>0) + *p_dev_name = strdup(loc); + else if(devcand) /* small mem. leak possible, does not matter, checks for that would require more code size than we loose */ + *p_dev_name=strdup(devcand); + } + if(p_speed) { /* sth. to write back */ + char *bad; + int cfg_speed=-1; + + /* that value may be used twice */ + if(NULL!=(t=cfg_get("CDR_SPEED"))) { + cfg_speed=strtol(t,&bad,10); + if(*bad || cfg_speed<-1) { + fprintf(stderr, "Bad default CDR_SPEED setting (%s).\n", t); + exit(EXIT_FAILURE); + } + } + + if(*p_speed>0) { + /* ok, already set by the program arguments */ + } + else if(NULL!=(t=getenv("CDR_SPEED"))) { + *p_speed=strtol(t,&bad,10); + if(*bad || *p_speed<-1) { + fprintf(stderr, "Bad CDR_SPEED environment (%s).\n", t); + exit(EXIT_FAILURE); + } + } + else if(wc>1 && *sSpeed) { + *p_speed=strtol(sSpeed, &bad, 10); + if(*bad || *p_speed<-1) { + fprintf(stderr, "Bad speed (%s) in the config, drive description.\n", sSpeed); + exit(EXIT_FAILURE); + } + if(*p_speed==-1) + /* that's autodetect, use the config default as last ressort */ + *p_speed=cfg_speed; + } + else + *p_speed=cfg_speed; + } + if(p_fifosize) { /* sth. to write back */ + if(*p_fifosize>0) { + /* ok, already set by the user */ + } + else if(NULL!=(t=getenv("CDR_FIFOSIZE"))) { + if(getnum(t, p_fifosize)!=1 || *p_fifosize<-1) { + fprintf(stderr, "Bad CDR_FIFOSIZE environment (%s).\n", t); + exit(EXIT_FAILURE); + } + } + else if(wc>2 && *sFs && strcmp("-1", sFs)) { + if(getnum(sFs, p_fifosize)!=1 || *p_fifosize<-1) { + fprintf(stderr, "Bad fifo size (%s) in the config, device description.\n", sFs); + exit(EXIT_FAILURE); + } + } + else if(NULL!=(t=cfg_get("CDR_FIFOSIZE"))) { + if(getnum(t, p_fifosize)!=1 || *p_fifosize<-1) { + fprintf(stderr, "Bad speed default setting (%s).\n", t); + exit(EXIT_FAILURE); + } + } + if(NULL!=(t=cfg_get("CDR_MAXFIFOSIZE"))) { + long max; + if(getnum(t, &max)!=1 || *p_fifosize<-1) { + fprintf(stderr, "Bad CDR_MAXFIFOSIZE setting (%s).\n", t); + exit(EXIT_FAILURE); + } + if(*p_fifosize>max) + *p_fifosize=max; + } + } + + if(p_drv_opts && !*p_drv_opts && wc>3 && strcmp(sOpts, "\"\"")) + *p_drv_opts=strdup(sOpts); + + cfg_close(); + +} |