set SIM_TYPE func  ;
set CASE_NUM 1   ;
set SIM_TIME 100sec  ;#as all
set CORNER_TYPE max ;
set COPY_RUN_TEMPLATE no;

#declear a empty list 

set args [list];
#put the do command $1-$9 to list,because we can't use the argv,we should construct the "argv" mannully.
for {set i 1} {$i <= $argc} {incr i 1} {
    lappend args [set $i];
}
puts "---->parsing the command line....argc=$argc,args=$args*************************"

#get the max index of the list,the "expr" command should be use to calculate out the express
set max_index  [expr  $argc-1];

#search copy templation option
for {set i 0} {$i < $argc} {incr i 1} {

    set para [lindex  $args $i]
    if {[string equal $para "-c"]} {
        set COPY_RUN_TEMPLATE yes
        puts "whether to copy run.tcl template=$COPY_RUN_TEMPLATE"
        break;
    }
}

#search generate instantiate_top.sv opton
for {set i 0} {$i < $argc} {incr i 1} {

    set para [lindex  $args $i]
    if {[string equal $para "-g"]} {
        set GEN_INSTANTIATE_TOP yes
        puts "force generate instantiate_top.sv and override exist file"
        break;
    }
}

#search case number
for {set i 0} {$i < $argc} {incr i 1} {
     set para [lindex  $args $i];
     if {[string equal $para "-n"] } {

        if {$i < $max_index} {
            set num [lindex $args [expr [expr $i+1]]];
            if { [string is digit $num] } {
                set CASE_NUM [format "%03d" $num];
                puts "case number=$CASE_NUM"
            }
            break;
        }
    }
}

#search simulation time
for {set i 0} {$i < $argc} {incr i 1} {

    set para [lindex  $args $i]
    if {[string equal $para "-t"]} {
        if {$i < $max_index} {
            set time [lindex $args [expr $i+1]]
            if {[regexp {^[0-9]+((n|u|m)s|sec)$} $time]} {
                set SIM_TIME $time
                puts "simulation time=$SIM_TIME"
            } else {
                puts "unknow simulation time,set to 1us"
                set SIM_TIME 1us
                puts "simulation time=$SIM_TIME"

            }
            break;
        }
    }
}

#search simulation type
for {set i 0} {$i < $argc} {incr i 1} {

    set para [lindex  $args $i]
    if {[string equal $para "-timing"]} {
        set SIM_TYPE "timing"
        puts "simulation type=$SIM_TYPE"
        break;
    } elseif {[string equal $para "-func"]} {
        set SIM_TYPE "func"
        puts "simulation type=$SIM_TYPE"
        break;
    }
}


#search corner type 
for {set i 0} {$i < $argc} {incr i 1} { 

    set para [lindex  $args $i] 
    if {[string equal $para "-corner"]} { 
        if {$i < $max_index } { 
            set corner [lindex $args [expr $i+1]] 

            #处理run.tcl中再次调用本脚本导致的bug ,删除前导的数字
            regsub -nocase {[0-9]+_} $corner "" corner 

            switch -glob  $corner { 
                "max" { 
                    set CORNER_TYPE 03_max 
                } 
                "min" { 
                    set CORNER_TYPE 01_min 
                } 
                "type" { 
                    set CORNER_TYPE 02_type 
                } 
                default { 
                    puts "unknow corner type,set to 03_max" 
                    set CORNER_TYPE 03_max 
                } 

            } 
            puts "corner type=$CORNER_TYPE" 
            break; 
        } 
    } 
} 



#search simulation type
for {set i 0} {$i < $argc} {incr i 1} {

    set para [lindex  $args $i]
    if {[string equal $para "-h"]} {
        puts "------------------------help------------------------"
        puts "-n x:specify case number to be excuted,x stand for case number,default to 0"
        puts "-t x:specify simulation time to be excuted,x stand for time,unit may be ns,us,ms,sec,default to 1us"
        puts "-timing:specify to excute in timing simulation mode"
        puts "-corner x:specify the timing simulation corner,may be max,min,type,default to max"
        puts "-c:force to override run.tcl scripts in case directory,be carefull"
        puts "-h:to display this help information,it has the highest priority,thus block other options"
        puts "----------------------------------------------------"
        return 0;
    }
}

puts "---->parsing the command line complete ***************************"