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f0e693b1
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2021-09-07T17:53:49
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str: introduce `git_str` for internal, `git_buf` is external
libgit2 has two distinct requirements that were previously solved by
`git_buf`. We require:
1. A general purpose string class that provides a number of utility APIs
for manipulating data (eg, concatenating, truncating, etc).
2. A structure that we can use to return strings to callers that they
can take ownership of.
By using a single class (`git_buf`) for both of these purposes, we have
confused the API to the point that refactorings are difficult and
reasoning about correctness is also difficult.
Move the utility class `git_buf` to be called `git_str`: this represents
its general purpose, as an internal string buffer class. The name also
is an homage to Junio Hamano ("gitstr").
The public API remains `git_buf`, and has a much smaller footprint. It
is generally only used as an "out" param with strict requirements that
follow the documentation. (Exceptions exist for some legacy APIs to
avoid breaking callers unnecessarily.)
Utility functions exist to convert a user-specified `git_buf` to a
`git_str` so that we can call internal functions, then converting it
back again.
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574c590f
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2021-09-09T21:53:45
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Fix multiline strip_comments logic
The strip_comments function uses the count of quotes to know if a
comment char (';' or '#') is the start of a comment or part of the
multiline as a string.
Unfortunately converting the count of quotes from previous lines to a
boolean meant that it would only work as expected in some cases
(0 quotes or an odd number of quotes).
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14f6950b
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2021-05-10T23:14:17
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buf: bom enum is in the buf namespace
Instead of a `git_bom_t` that a `git_buf` function returns, let's keep
it `git_buf_bom_t`.
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d525e063
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2021-05-10T23:04:59
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buf: remove internal `git_buf_text` namespace
The `git_buf_text` namespace is unnecessary and strange. Remove it,
just keep the functions prefixed with `git_buf`.
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e7604da8
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2020-04-05T14:51:56
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config: use GIT_ASSERT
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6ac18625
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2020-09-09T17:51:38
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Fix config file parsing with multi line values containing quoted parts
Signed-off-by: Sven Strickroth <email@cs-ware.de>
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dbeadf8a
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2019-07-11T10:56:05
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config_parse: provide parser init and dispose functions
Right now, all configuration file backends are expected to
directly mess with the configuration parser's internals in order
to set it up. Let's avoid doing that by implementing both a
`git_config_parser_init` and `git_config_parser_dispose` function
to clearly define the interface between configuration backends
and the parser.
Ideally, we would make the `git_config_parser` structure
definition private to its implementation. But as that would
require an additional memory allocation that was not required
before we just live with it being visible to others.
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6e6da75f
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2019-07-11T11:00:05
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config_parse: remove use of `git_config_file`
The config parser code needs to keep track of the current parsed
file's name so that we are able to provide proper error messages
to the user. Right now, we do that by storing a `git_config_file`
in the parser structure, but as that is a specific backend and
the parser aims to be generic, it is a layering violation.
Switch over to use a simple string to fix that.
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76749dfb
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2019-06-21T12:33:31
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config_parse: rename `data` parameter to `payload` for clarity
By convention, parameters that get passed to callbacks are
usually named `payload` in our codebase. Rename the `data`
parameters in the configuration parser callbacks to `payload` to
avoid confusion.
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b11eb08f
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2019-05-21T14:39:55
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config parse: safely cast to int
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355b02a1
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2019-05-22T11:48:28
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config: rename subsection header parser func
The `parse_section_header_ext` name suggests that it as an extended
function for parsing the section header. It is not. Rename it to
`parse_subsection_header` to better reflect its true mission.
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23c5699e
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2019-05-16T09:37:25
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config: validate quoted section value
When we reach a whitespace after a section name, we assume that what
will follow will be a quoted subsection name. Pass the current position
of the line being parsed to the subsection parser, so that it can
validate that subsequent characters are additional whitespace or a
single quote.
Previously we would begin parsing after the section name, looking for
the first quotation mark. This allows invalid characters to embed
themselves between the end of the section name and the first quotation
mark, eg `[section foo "subsection"]`, which is illegal.
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b83bd037
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2019-05-16T08:57:10
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config: don't write invalid column
When we don't specify a particular column, don't write it in the error
message. (column "0" is unhelpful.)
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42dd38dd
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2019-05-16T08:55:40
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config: lowercase error messages
Update the configuration parsing error messages to be lower-cased for
consistency with the rest of the library.
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f673e232
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2018-12-27T13:47:34
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git_error: use new names in internal APIs and usage
Move to the `git_error` name in the internal API for error-related
functions.
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1d718fa5
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2018-09-28T11:55:34
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config: variables might appear on the same line as a section header
While rare and a machine would typically not generate such a configuration file,
it is nevertheless valid to write
[foo "bar"] baz = true
and we need to deal with that instead of assuming everything is on its own line.
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2be39cef
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2018-08-10T19:38:57
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config: introduce new read-only in-memory backend
Now that we have abstracted away how to store and retrieve config
entries, it became trivial to implement a new in-memory backend by
making use of this. And thus we do so.
This commit implements a new read-only in-memory backend that can parse
a chunk of memory into a `git_config_backend` structure.
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b9affa32
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2018-08-10T19:23:00
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config_parse: avoid unused static declared values
The variables `git_config_escaped` and `git_config_escapes` are both
defined as static const character pointers in "config_parse.h". In case
where "config_parse.h" is included but those two variables are not being
used, the compiler will thus complain about defined but unused
variables. Fix this by declaring them as external and moving the actual
initialization to the C file.
Note that it is not possible to simply make this a #define, as we are
indexing into those arrays.
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bc63e1ef
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2018-09-03T10:49:46
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config_parse: refactor error handling when parsing multiline variables
The current error handling for the multiline variable parser is a bit
fragile, as each error condition has its own code to clear memory.
Instead, unify error handling as far as possible to avoid this
repetitive code. While at it, make use of `GITERR_CHECK_ALLOC` to
correctly handle OOM situations and verify that the buffer we print into
does not run out of memory either.
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38b85255
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2018-09-01T03:50:26
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config: Fix a leak parsing multi-line config entries
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a03113e8
|
2018-08-25T17:04:39
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config: convert unbounded recursion into a loop
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b8a67eda
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2018-07-22T23:47:12
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Fix a double-free in config parsing
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83b5f161
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2017-11-12T14:09:24
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config_parse: always sanitize out-parameters in `parse_variable`
The `parse_variable` function has two out parameters `var_name` and
`var_value`. Currently, those are not being sanitized to `NULL`. when.
any error happens inside of the `parse_variable` function. Fix that.
While at it, the coding style is improved to match our usual coding
practices more closely.
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e51e29e8
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2017-11-12T13:59:47
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config_parse: have `git_config_parse` own entry value and name
The function `git_config_parse` uses several callbacks to pass data
along to the caller as it parses the file. One design shortcoming here
is that strings passed to those callbacks are expected to be freed by
them, which is really confusing.
Fix the issue by changing memory ownership here. Instead of expecting
the `on_variable` callbacks to free memory for `git_config_parse`, just
do it inside of `git_config_parse`. While this obviously requires a bit
more memory allocation churn due to having to copy both name and value
at some places, this shouldn't be too much of a burden.
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ecf4f33a
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2018-02-08T11:14:48
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Convert usage of `git_buf_free` to new `git_buf_dispose`
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ba4faf6e
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2018-02-08T17:15:33
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buf_text: remove `offset` parameter of BOM detection function
The function to detect a BOM takes an offset where it shall look for a
BOM. No caller uses that, and searching for the BOM in the middle of a
buffer seems to be very unlikely, as a BOM should only ever exist at
file start.
Remove the parameter, as it has already caused confusion due to its
weirdness.
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2eea5f1c
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2018-02-08T10:27:31
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config_parse: fix reading files with BOM
The function `skip_bom` is being used to detect and skip BOM marks
previously to parsing a configuration file. To do so, it simply uses
`git_buf_text_detect_bom`. But since the refactoring to use the parser
interface in commit 9e66590bd (config_parse: use common parser
interface, 2017-07-21), the BOM detection was actually broken.
The issue stems from a misunderstanding of `git_buf_text_detect_bom`. It
was assumed that its third parameter limits the length of the character
sequence that is to be analyzed, while in fact it was an offset at which
we want to detect the BOM. Fix the parameter to be `0` instead of the
buffer length, as we always want to check the beginning of the
configuration file.
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848153f3
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2018-02-08T10:02:29
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config_parse: handle empty lines with CRLF
Currently, the configuration parser will fail reading empty lines with
just an CRLF-style line ending. Special-case the '\r' character in order
to handle it the same as Unix-style line endings. Add tests to spot this
regression in the future.
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5340ca77
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2018-02-08T09:31:51
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config_parse: add comment to clarify logic getting next character
Upon each line, the configuration parser tries to get either the first
non-whitespace character or the first whitespace character, in case
there is no non-whitespace character. The logic handling this looks
rather odd and doesn't immediately convey this meaning, so add a comment
to clarify what happens.
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9e66590b
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2017-07-21T13:01:43
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config_parse: use common parser interface
As the config parser is now cleanly separated from the config file code,
we can easily refactor the code and make use of the common parser
module. This removes quite a lot of duplicated functionality previously
used for handling the actual parser state and replaces it with the
generic interface provided by the parser context.
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1953c68b
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2017-11-11T17:12:31
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config_file: split out module to parse config files
The configuration file code grew quite big and intermingles both actual
configuration logic as well as the parsing logic of the configuration
syntax. This makes it hard to refactor the parsing logic on its own and
convert it to make use of our new parsing context module.
Refactor the code and split it up into two parts. The config file code
will only handle actual handling of configuration files, includes and
writing new files. The newly created config parser module is then only
responsible for parsing the actual contents of a configuration file,
leaving everything else to callbacks provided to its provided function
`git_config_parse`.
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