export_ops.c File Reference

Export helpers. More...

#include "builtins.h"
#include "libft.h"
#include "env.h"

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Detailed Description

Export helpers.

Definition in file export_ops.c.

Functions
void	export_no_value (t_env **env, char *key)
	Export a variable with no value (export KEY) More...
void	export_assign (t_env **env, char *arg)
	Export a variable with a value (export KEY=value) More...
static char *	get_append_value (t_env *env, char *key, char *append_str)
	Build the new value for an append operation. More...
void	export_append (t_env **env, char *arg)
	Export a variable with append (export KEY+=value) More...

Function Documentation

export_no_value()

void export_no_value	(	t_env **	env,
		char *	key
	)

Export a variable with no value (export KEY)

• If the key already exists, do nothing
• If it does not, create a new node with value=NULL

Parameters

env	Pointer to env list head
key	Variable name to export

Definition at line 26 of file export_ops.c.

References add_env_node(), t_env::key, t_env::next, and t_env::value.

Referenced by export_one().

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export_assign()

void export_assign	(	t_env **	env,
		char *	arg
	)

Export a variable with a value (export KEY=value)

Split the argument at = to extract key and value then call set_env_value() to create or update the variable

Parameters

env	Pointer to env list head
arg	Full argument string containing = somewhere

Definition at line 55 of file export_ops.c.

References set_env_value().

Referenced by export_one().

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get_append_value()

static char* get_append_value ( t_env *  env, char *  key, char *  append_str  )

static

Build the new value for an append operation.

If the variable already exists, concatenates old value with append_str(), and if not then duplicates append_str as the new value

Parameters

env	Environment list for looking up existing value
key	Variable name
append_str	String to append

Returns

Newly allocated value

Definition at line 82 of file export_ops.c.

References append_str(), and get_env_value().

Referenced by export_append().

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export_append()

void export_append	(	t_env **	env,
		char *	arg
	)

Export a variable with append (export KEY+=value)

Splits at += and builds the appended value using get_append_value() then calls set_env_value() to update the variable

Parameters

env	Pointer to env list head
arg	Full arg string containing "+="

Definition at line 104 of file export_ops.c.

References get_append_value(), and set_env_value().

Referenced by export_one().

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