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Moved expand_envvars.

Browse source 
Signed-off-by: Martin Bremmer <martin.bremmer@adlinktech.com>
This commit is contained in:
Martin Bremmer 2019-04-11 14:10:08 +02:00
parent 17f9c361ea
commit 973ae87e17
5 changed files with 150 additions and 12 deletions
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44
src/ddsrt/include/dds/ddsrt/environ.h
View file

@ -96,6 +96,50 @@ ddsrt_unsetenv(
const char *name)
ddsrt_nonnull_all;
/**
* @brief Expand environment variables within string.
*
* Expands ${X}, ${X:-Y}, ${X:+Y}, ${X:?Y} forms, but not $X.
*
* The result string should be freed with ddsrt_free().
*
* @param[in] string String to expand.
*
* @returns Allocated char*.
*
* @retval NULL
* Expansion failed.
* @retval Pointer
* Copy of the string argument with the environment
* variables expanded.
*/
DDS_EXPORT char*
ddsrt_expand_envvars(
const char *string);
/**
* @brief Expand environment variables within string.
*
* Expands $X, ${X}, ${X:-Y}, ${X:+Y}, ${X:?Y} forms, $ and \
* can be escaped with \.
*
* The result string should be freed with ddsrt_free().
*
* @param[in] string String to expand.
*
* @returns Allocated char*.
*
* @retval NULL
* Expansion failed.
* @retval Pointer
* Copy of the string argument with the environment
* variables expanded.
*/
DDS_EXPORT char*
ddsrt_expand_envvars_sh(
const char *string);
#if defined(__cplusplus)
}
#endif

105
src/ddsrt/tests/environ.c
View file

@ -14,6 +14,7 @@
#include "CUnit/Theory.h"
#include "dds/ddsrt/environ.h"
#include "dds/ddsrt/misc.h"
#include "dds/ddsrt/heap.h"
CU_TheoryDataPoints(ddsrt_environ, bad_name) = {
CU_DataPoints(const char *, "", "foo=")
@ -91,8 +92,110 @@ CU_Test(ddsrt_environ, getenv)
CU_ASSERT_STRING_EQUAL(ptr, "bar");
}
/* Ensure environement is as it was. */
/* Ensure environment is as it was. */
rc = ddsrt_unsetenv(name);
CU_ASSERT_EQUAL(rc, DDS_RETCODE_OK);
}
CU_TheoryDataPoints(ddsrt_environ, expand) = {
CU_DataPoints(const char *,
"${X}", "$X", "X", "${Y}", "${Q}", "${X",
"${X:-ALT}", "${Q:-ALT}", "${X:-${Y}}", "${Q:-${Y}}", "${X:-$Y}", "${Q:-$Y}", "${X:-}", "${Q:-}",
"${X:+SET}", "${Q:+SET}", "${X:+${Y}}", "${Q:+${Y}}", "${X:+$Y}", "${Q:+$Y}", "${X:+}", "${Q:+}",
"${X:?SET}", "${Q:?SET}", "${X:?${Y}}", "${Q:?${Y}}", "${X:?$Y}", "${Q:?$Y}", "${X:?}", "${Q:?}"),
CU_DataPoints(const char *,
"TEST", "$X", "X", "FOO", "", NULL,
"TEST", "ALT", "TEST", "FOO", "TEST", "$Y", "TEST", "",
"SET", "", "FOO", "", "$Y", "", "", "",
"TEST", NULL, "TEST", NULL, "TEST", NULL, "TEST", NULL)
};
CU_Theory((const char *var, const char *expect), ddsrt_environ, expand)
{
dds_retcode_t rc;
static const char x_name[] = "X";
static const char x_value[] = "TEST";
static const char y_name[] = "Y";
static const char y_value[] = "FOO";
char *ptr;
/* Ensure that the vars are not used yet. */
rc = ddsrt_unsetenv(x_name);
CU_ASSERT_EQUAL_FATAL(rc, DDS_RETCODE_OK);
rc = ddsrt_unsetenv(y_name);
CU_ASSERT_EQUAL_FATAL(rc, DDS_RETCODE_OK);
/* Set the env vars to check expansion. */
rc = ddsrt_setenv(x_name, x_value);
CU_ASSERT_EQUAL_FATAL(rc, DDS_RETCODE_OK);
rc = ddsrt_setenv(y_name, y_value);
CU_ASSERT_EQUAL_FATAL(rc, DDS_RETCODE_OK);
/* Expand a string with available environment variables. */
ptr = ddsrt_expand_envvars(var);
if (ptr) {
/* printf("==== %10s: expand(%s), expect(%s))\n", var, ptr, expect); */
CU_ASSERT_STRING_EQUAL(ptr, expect);
ddsrt_free(ptr);
} else {
/* printf("==== %10s: expand(<null>), expect(<null>))\n", var ? var : "<null>"); */
CU_ASSERT_PTR_NULL(expect);
}
/* Ensure to reset the environment is as it was. */
rc = ddsrt_unsetenv(y_name);
CU_ASSERT_EQUAL(rc, DDS_RETCODE_OK);
rc = ddsrt_unsetenv(x_name);
CU_ASSERT_EQUAL(rc, DDS_RETCODE_OK);
}
CU_TheoryDataPoints(ddsrt_environ, expand_sh) = {
CU_DataPoints(const char *,
"${X}", "$X", "X", "${Y}", "${Q}", "${X",
"${X:-ALT}", "${Q:-ALT}", "${X:-${Y}}", "${Q:-${Y}}", "${X:-$Y}", "${Q:-$Y}", "${X:-}", "${Q:-}",
"${X:+SET}", "${Q:+SET}", "${X:+${Y}}", "${Q:+${Y}}", "${X:+$Y}", "${Q:+$Y}", "${X:+}", "${Q:+}",
"${X:?SET}", "${Q:?SET}", "${X:?${Y}}", "${Q:?${Y}}", "${X:?$Y}", "${Q:?$Y}", "${X:?}", "${Q:?}"),
CU_DataPoints(const char *,
"TEST", "TEST", "X", "FOO", "", NULL,
"TEST", "ALT", "TEST", "FOO", "TEST", "FOO", "TEST", "",
"SET", "", "FOO", "", "FOO", "", "", "",
"TEST", NULL, "TEST", NULL, "TEST", NULL, "TEST", NULL)
};
CU_Theory((const char *var, const char *expect), ddsrt_environ, expand_sh)
{
dds_retcode_t rc;
static const char x_name[] = "X";
static const char x_value[] = "TEST";
static const char y_name[] = "Y";
static const char y_value[] = "FOO";
char *ptr;
/* Ensure that the vars are not used yet. */
rc = ddsrt_unsetenv(x_name);
CU_ASSERT_EQUAL_FATAL(rc, DDS_RETCODE_OK);
rc = ddsrt_unsetenv(y_name);
CU_ASSERT_EQUAL_FATAL(rc, DDS_RETCODE_OK);
/* Set the env vars to check expansion. */
rc = ddsrt_setenv(x_name, x_value);
CU_ASSERT_EQUAL_FATAL(rc, DDS_RETCODE_OK);
rc = ddsrt_setenv(y_name, y_value);
CU_ASSERT_EQUAL_FATAL(rc, DDS_RETCODE_OK);
/* Expand a string with available environment variables. */
ptr = ddsrt_expand_envvars_sh(var);
if (ptr) {
/* printf("==== %10s: expand(%s), expect(%s))\n", var, ptr, expect); */
CU_ASSERT_STRING_EQUAL(ptr, expect);
ddsrt_free(ptr);
} else {
/* printf("==== %10s: expand(<null>), expect(<null>))\n", var ? var : "<null>"); */
CU_ASSERT_PTR_NULL(expect);
}
/* Ensure to reset the environment is as it was. */
rc = ddsrt_unsetenv(y_name);
CU_ASSERT_EQUAL(rc, DDS_RETCODE_OK);
rc = ddsrt_unsetenv(x_name);
CU_ASSERT_EQUAL(rc, DDS_RETCODE_OK);
}