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Add new flag --write-includes for tracking imported dependencies #228

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Add new flag --write-includes for tracking imported dependencies #228

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66 changes: 52 additions & 14 deletions sassc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -88,7 +88,30 @@ int output(int error_status, const char* error_message, const char* output_strin
}
}

int compile_stdin(struct Sass_Options* options, char* outfile) {
int write_depsfile(struct Sass_Context* ctx_out, char* deps_outfile) {
size_t i;

FILE* fp = fopen(deps_outfile, "wb");
if(!fp) {
perror("Error opening deps output file");
return 1;
}

char** included_files = sass_context_get_included_files(ctx_out);
size_t num_included_files = sass_context_get_included_files_size(ctx_out);
for(i = 0; i < num_included_files; ++i) {
if(fprintf(fp, "%s\n", included_files[i]) < 0) {
perror("Error writing to deps output file");
fclose(fp);
return 1;
}
}

fclose(fp);
return 0;
}

int compile_stdin(struct Sass_Options* options, char* outfile, char* deps_outfile) {
int ret;
struct Sass_Data_Context* ctx;
char buffer[BUFSIZE];
Expand Down Expand Up @@ -142,11 +165,16 @@ int compile_stdin(struct Sass_Options* options, char* outfile) {
sass_context_get_output_string(ctx_out),
outfile
);

if (ret == 0 && deps_outfile) {
ret = write_depsfile(ctx_out, deps_outfile);
}

sass_delete_data_context(ctx);
return ret;
}

int compile_file(struct Sass_Options* options, char* input_path, char* outfile) {
int compile_file(struct Sass_Options* options, char* input_path, char* outfile, char* deps_outfile) {
int ret;
struct Sass_File_Context* ctx = sass_make_file_context(input_path);
struct Sass_Context* ctx_out = sass_file_context_get_context(ctx);
Expand All @@ -173,6 +201,10 @@ int compile_file(struct Sass_Options* options, char* input_path, char* outfile)
);
}

if (ret == 0 && deps_outfile) {
ret = write_depsfile(ctx_out, deps_outfile);
}

sass_delete_file_context(ctx);
return ret;
}
Expand Down Expand Up @@ -208,16 +240,17 @@ void print_usage(char* argv0) {
printf(" %s", style_option_strings[i].style_string);
printf(i == 0 ? ".\n" : ",");
}
printf(" -l, --line-numbers Emit comments showing original line numbers.\n");
printf(" -l, --line-numbers Emit comments showing original line numbers.\n");
printf(" --line-comments\n");
printf(" -I, --load-path PATH Set Sass import path.\n");
printf(" -P, --plugin-path PATH Set path to autoload plugins.\n");
printf(" -m, --sourcemap[=TYPE] Emit source map (auto or inline).\n");
printf(" -M, --omit-map-comment Omits the source map url comment.\n");
printf(" -p, --precision Set the precision for numbers.\n");
printf(" -a, --sass Treat input as indented syntax.\n");
printf(" -v, --version Display compiled versions.\n");
printf(" -h, --help Display this help message.\n");
printf(" -I, --load-path PATH Set Sass import path.\n");
printf(" -D, --write-includes FILE Write a file containing the dependencies that were imported.\n");
printf(" -P, --plugin-path PATH Set path to autoload plugins.\n");
printf(" -m, --sourcemap[=TYPE] Emit source map (auto or inline).\n");
printf(" -M, --omit-map-comment Omits the source map url comment.\n");
printf(" -p, --precision Set the precision for numbers.\n");
printf(" -a, --sass Treat input as indented syntax.\n");
printf(" -v, --version Display compiled versions.\n");
printf(" -h, --help Display this help message.\n");
printf("\n");
}

Expand Down Expand Up @@ -245,6 +278,7 @@ int main(int argc, char** argv) {
}

char *outfile = 0;
char *deps_outfile = 0;
int from_stdin = 0;
bool auto_source_map = false;
bool generate_source_map = false;
Expand All @@ -259,6 +293,7 @@ int main(int argc, char** argv) {
{
{ "stdin", no_argument, 0, 's' },
{ "load-path", required_argument, 0, 'I' },
{ "write-includes", required_argument, 0, 'D' },
{ "plugin-path", required_argument, 0, 'P' },
{ "style", required_argument, 0, 't' },
{ "line-numbers", no_argument, 0, 'l' },
Expand All @@ -271,14 +306,17 @@ int main(int argc, char** argv) {
{ "help", no_argument, 0, 'h' },
{ NULL, 0, NULL, 0}
};
while ((c = getopt_long(argc, argv, "vhslm::Map:t:I:P:", long_options, &long_index)) != -1) {
while ((c = getopt_long(argc, argv, "vhslm::Map:t:I:D:P:", long_options, &long_index)) != -1) {
switch (c) {
case 's':
from_stdin = 1;
break;
case 'I':
sass_option_push_include_path(options, optarg);
break;
case 'D':
deps_outfile = optarg;
break;
case 'P':
sass_option_push_plugin_path(options, optarg);
break;
Expand Down Expand Up @@ -367,12 +405,12 @@ int main(int argc, char** argv) {
} else if (auto_source_map) {
sass_option_set_source_map_embed(options, true);
}
result = compile_file(options, argv[optind], outfile);
result = compile_file(options, argv[optind], outfile, deps_outfile);
} else {
if (optind < argc) {
outfile = argv[optind];
}
result = compile_stdin(options, outfile);
result = compile_stdin(options, outfile, deps_outfile);
}

sass_delete_options(options);
Expand Down