bitbake: bitbake-user-manual: Updated the datastore functions

Fixes [YOCTO #10400]

No information existed for cases when a variable did not exist.
I added this information to each of the variables in the table.

(Bitbake rev: 466b2c30f31754a7b6a2478e359f687ec6888e0d)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Scott Rifenbark 2016-10-10 11:48:03 -07:00 committed by Richard Purdie
parent b2f1d21ff3
commit eedb264387
1 changed files with 32 additions and 12 deletions

View File

@ -2317,7 +2317,8 @@
<row>
<entry align="left"><filename>d.getVar("X", expand)</filename></entry>
<entry align="left">Returns the value of variable "X".
Using "expand=True" expands the value.</entry>
Using "expand=True" expands the value.
Returns "None" if the variable "X" does not exist.</entry>
</row>
<row>
<entry align="left"><filename>d.setVar("X", "value")</filename></entry>
@ -2325,24 +2326,32 @@
</row>
<row>
<entry align="left"><filename>d.appendVar("X", "value")</filename></entry>
<entry align="left">Adds "value" to the end of the variable "X".</entry>
<entry align="left">Adds "value" to the end of the variable "X".
Acts like <filename>d.setVar("X", "value")</filename>
if the variable "X" does not exist.</entry>
</row>
<row>
<entry align="left"><filename>d.prependVar("X", "value")</filename></entry>
<entry align="left">Adds "value" to the start of the variable "X".</entry>
<entry align="left">Adds "value" to the start of the variable "X".
Acts like <filename>d.setVar("X", "value")</filename>
if the variable "X" does not exist.</entry>
</row>
<row>
<entry align="left"><filename>d.delVar("X")</filename></entry>
<entry align="left">Deletes the variable "X" from the datastore.</entry>
<entry align="left">Deletes the variable "X" from the datastore.
Does nothing if the variable "X" does not exist.</entry>
</row>
<row>
<entry align="left"><filename>d.renameVar("X", "Y")</filename></entry>
<entry align="left">Renames the variable "X" to "Y".</entry>
<entry align="left">Renames the variable "X" to "Y".
Does nothing if the variable "X" does not exist.</entry>
</row>
<row>
<entry align="left"><filename>d.getVarFlag("X", flag, expand)</filename></entry>
<entry align="left">Returns the value of variable "X".
Using "expand=True" expands the value.</entry>
Using "expand=True" expands the value.
Returns "None" if either the variable "X" or the named flag
does not exist.</entry>
</row>
<row>
<entry align="left"><filename>d.setVarFlag("X", flag, "value")</filename></entry>
@ -2351,12 +2360,16 @@
<row>
<entry align="left"><filename>d.appendVarFlag("X", flag, "value")</filename></entry>
<entry align="left">Appends "value" to the named flag on the
variable "X".</entry>
variable "X".
Acts like <filename>d.setVarFlag("X", flag, "value")</filename>
if the named flag does not exist.</entry>
</row>
<row>
<entry align="left"><filename>d.prependVarFlag("X", flag, "value")</filename></entry>
<entry align="left">Prepends "value" to the named flag on
the variable "X".</entry>
the variable "X".
Acts like <filename>d.setVarFlag("X", flag, "value")</filename>
if the named flag does not exist.</entry>
</row>
<row>
<entry align="left"><filename>d.delVarFlag("X", flag)</filename></entry>
@ -2372,16 +2385,23 @@
</row>
<row>
<entry align="left"><filename>d.getVarFlags("X")</filename></entry>
<entry align="left">Returns a <filename>flagsdict</filename> of the flags for
the variable "X".</entry>
<entry align="left">Returns a <filename>flagsdict</filename>
of the flags for the variable "X".
Returns "None" if the variable "X" does not exist.</entry>
</row>
<row>
<entry align="left"><filename>d.delVarFlags("X")</filename></entry>
<entry align="left">Deletes all the flags for the variable "X".</entry>
<entry align="left">Deletes all the flags for the variable "X".
Does nothing if the variable "X" does not exist.</entry>
</row>
<row>
<entry align="left"><filename>d.expand(expression)</filename></entry>
<entry align="left">Expands variable references in the specified string expression.</entry>
<entry align="left">Expands variable references in the specified
string expression.
References to variables that do not exist are left as is.
For example, <filename>d.expand("foo ${X}")</filename>
expands to the literal string "foo ${X}" if the
variable "X" does not exist.</entry>
</row>
</tbody>
</tgroup>