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[libpng18] chore: Clean up the FILE * formulations in code and in documentation

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We should use `FILE *` instead of `FILE*` or `(FILE*)`, consistently,
as we should for all other pointer types. Moreover, when we refer to
standard stdio file objects in comments and in documentation, we should
use the term "FILE objects" consistently.

Lastly, we clarify in a comment in example.c that `PNG_STDIO_SUPPORTED`
is true only when the stdio support is both available in the system and
accessible in the user's libpng build.

This is a cherry-pick of commit c63c5463903014c904b540216c2784023fb8c1c8
from branch 'libpng18'.

Reviewed-by: John Bowler <jbowler@acm.org>
Signed-off-by: Cosmin Truta <ctruta@gmail.com>
This commit is contained in:
Cosmin Truta
2025-02-21 15:34:09 +02:00
parent 044536de92
commit 44f97f08d7
9 changed files with 23 additions and 22 deletions
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6
libpng.3
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@@ -223,7 +223,7 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.6.47
\fBint png_image_begin_read_from_file (png_imagep \fP\fIimage\fP\fB, const char \fI*file_name\fP\fB);\fP
\fBint png_image_begin_read_from_stdio (png_imagep \fP\fIimage\fP\fB, FILE* \fIfile\fP\fB);\fP
\fBint png_image_begin_read_from_stdio (png_imagep \fP\fIimage\fP\fB, FILE *\fIfile\fP\fB);\fP
\fBint, png_image_begin_read_from_memory (png_imagep \fP\fIimage\fP\fB, png_const_voidp \fP\fImemory\fP\fB, size_t \fIsize\fP\fB);\fP
@@ -4608,7 +4608,7 @@ READ APIs
is filled in from the PNG header in the file.
int png_image_begin_read_from_stdio (png_imagep image,
FILE* file)
FILE *file)
The PNG header is read from the stdio FILE object.
@@ -4683,7 +4683,7 @@ be written:
int convert_to_8_bit, const void *buffer,
png_int_32 row_stride, const void *colormap)
Write the image to the given (FILE*).
Write the image to the given FILE object.
With all write APIs if image is in one of the linear formats with
(png_uint_16) data then setting convert_to_8_bit will cause the output to be