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Full Discussion: sed and awk usage to grep a pattern 1 and with reference to this grep a pattern 2 and pattern 3
Top Forums Shell Programming and Scripting sed and awk usage to grep a pattern 1 and with reference to this grep a pattern 2 and pattern 3 Post 302905427 by Don Cragun on Wednesday 11th of June 2014 12:27:36 PM
Old 06-11-2014
You could try something like:
Code:
#!/bin/ksh
end_fmt='\t\t\t}\n'
else_fmt='\t\t\t}\n\t\t\telse {\n'
if_fmt='\t\t\tif(yy_current_buffer -> yy_is_our_buffer == 0) {\n'
if_tag='YY_USES_REJECT'
awk -v end_f="$end_fmt" -v else_f="$else_fmt" -v if_f="$if_fmt" -v t="$if_tag" '
$1 == "#ifdef" && $2 == t {
	iff = 1
	printf if_f
	next
}
iff && $1 == "#else" {
	printf else_f
	next
}
iff && $1 == "#endif" {
	iff = 0
	printf end_f
	next
}
1' makefile

If you want to try this on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk, /usr/xpg6/bin/awk, or nawk.
If you have a file named makefile that contains:
Code:
#ifdef YY_USES_REJECT
				some text
#else
				some more text
#endif
			text after endif
#ifdef YY_OTHER_TAG
				nothing should happen here
#else
				or here
#endif
			or here.  Above #ifdef should not have been changed.
#ifdef YY_USES_REJECT
				some text again
#else
				some more text again
#endif
			text after endif again

the script above will produce the output:
Code:
			if(yy_current_buffer -> yy_is_our_buffer == 0) {
				some text
			}
			else {
				some more text
			}
			text after endif
#ifdef YY_OTHER_TAG
				nothing should happen here
#else
				or here
#endif
			or here.  Above #ifdef should not have been changed.
			if(yy_current_buffer -> yy_is_our_buffer == 0) {
				some text again
			}
			else {
				some more text again
			}
			text after endif again

This User Gave Thanks to Don Cragun For This Post:
breezevinay
 

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LEARN ABOUT SUSE

struct_irq_desc

STRUCT 
IRQ_DESC(9)						    Structures							STRUCT IRQ_DESC(9)

NAME

       struct_irq_desc - interrupt descriptor

SYNOPSIS

       struct irq_desc {
	 unsigned int irq;
	 struct timer_rand_state * timer_rand_state;
	 unsigned int * kstat_irqs;
       #ifdef CONFIG_INTR_REMAP
	 struct irq_2_iommu * irq_2_iommu;
       #endif
	 irq_flow_handler_t handle_irq;
	 struct irq_chip * chip;
	 struct msi_desc * msi_desc;
	 void * handler_data;
	 void * chip_data;
	 struct irqaction * action;
	 unsigned int status;
	 unsigned int depth;
	 unsigned int wake_depth;
	 unsigned int irq_count;
	 unsigned long last_unhandled;
	 unsigned int irqs_unhandled;
	 raw_spinlock_t lock;
       #ifdef CONFIG_SMP
	 cpumask_var_t affinity;
	 unsigned int node;
       #ifdef CONFIG_GENERIC_PENDING_IRQ
	 cpumask_var_t pending_mask;
       #endif
       #endif
	 atomic_t threads_active;
	 wait_queue_head_t wait_for_threads;
       #ifdef CONFIG_PROC_FS
	 struct proc_dir_entry * dir;
       #endif
	 const char * name;
       };

MEMBERS

       irq
	   interrupt number for this descriptor

       timer_rand_state
	   pointer to timer rand state struct

       kstat_irqs
	   irq stats per cpu

       irq_2_iommu
	   iommu with this irq

       handle_irq
	   highlevel irq-events handler [if NULL, __do_IRQ]

       chip
	   low level interrupt hardware access

       msi_desc
	   MSI descriptor

       handler_data
	   per-IRQ data for the irq_chip methods

       chip_data
	   platform-specific per-chip private data for the chip methods, to allow shared chip implementations

       action
	   the irq action chain

       status
	   status information

       depth
	   disable-depth, for nested irq_disable calls

       wake_depth
	   enable depth, for multiple set_irq_wake callers

       irq_count
	   stats field to detect stalled irqs

       last_unhandled
	   aging timer for unhandled count

       irqs_unhandled
	   stats field for spurious unhandled interrupts

       lock
	   locking for SMP

       affinity
	   IRQ affinity on SMP

       node
	   node index useful for balancing

       pending_mask
	   pending rebalanced interrupts

       threads_active
	   number of irqaction threads currently running

       wait_for_threads
	   wait queue for sync_irq to wait for threaded handlers

       dir
	   /proc/irq/ procfs entry

       name
	   flow handler name for /proc/interrupts output

AUTHORS

       Thomas Gleixner <tglx@linutronix.de>
	   Author.

       Ingo Molnar <mingo@elte.hu>
	   Author.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010							STRUCT IRQ_DESC(9)
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