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{ "strip-prefix":
{ "doc":
[ "Returns list of artifact maps (each map contains a single artifact)"
, "with the given prefix being stripped from their path."
]
, "vars": ["artifacts", "paths", "prefix"]
, "vars_doc":
{ "artifacts": ["A single map containing all artifacts."]
, "paths": ["List of (unprefixed) artifacts paths to consider."]
, "prefix": ["Prefix to strip from the artifact's path."]
}
, "expression":
{ "type": "foreach"
, "var": "path"
, "range": {"type": "var", "name": "paths"}
, "body":
{ "type": "singleton_map"
, "key": {"type": "var", "name": "path"}
, "value":
{ "type": "lookup"
, "key":
{ "type": "join"
, "separator": "/"
, "$1":
[ {"type": "var", "name": "prefix"}
, {"type": "var", "name": "path"}
]
}
, "map": {"type": "var", "name": "artifacts"}
}
}
}
}
, "expand_exec_tool":
{ "doc":
[ "Binary that expands specified env variables in argv and runs exec(2)."
, "The syntax for accessing variable \"VAR\" is \"$(VAR)\"."
, "Usage: expand_exec [VARS...] -- ARGV"
, ""
, "Requires a working C compiler for host from \"defaults\"."
]
, "vars": ["CC", "ENV", "defaults-transition"]
, "imports":
{ "compiler-cc": ["CC", "compiler-cc"]
, "default-ENV": ["CC", "default-ENV"]
, "default-PATH": ["CC", "default-PATH"]
, "default-TOOLCHAIN": ["CC", "default-TOOLCHAIN"]
, "default-NON_SYSTEM_TOOLS": ["CC", "default-NON_SYSTEM_TOOLS"]
}
, "expression":
{ "type": "let*"
, "bindings":
[ ["TOOLCHAIN_DIR", "toolchain"]
, ["TOOLCHAIN", {"type": "CALL_EXPRESSION", "name": "default-TOOLCHAIN"}]
, [ "TOOLCHAIN"
, { "type": "to_subdir"
, "subdir": {"type": "var", "name": "TOOLCHAIN_DIR"}
, "$1": {"type": "var", "name": "TOOLCHAIN"}
}
]
, [ "NON_SYSTEM_TOOLS"
, {"type": "CALL_EXPRESSION", "name": "default-NON_SYSTEM_TOOLS"}
]
, ["CC", {"type": "CALL_EXPRESSION", "name": "compiler-cc"}]
, [ "ENV"
, { "type": "map_union"
, "$1":
[ {"type": "CALL_EXPRESSION", "name": "default-ENV"}
, {"type": "var", "name": "ENV", "default": {"type": "empty_map"}}
]
}
]
, [ "ENV_PATH"
, { "type": "lookup"
, "map": {"type": "var", "name": "ENV"}
, "key": "PATH"
}
]
, [ "ENV"
, { "type": "map_union"
, "$1":
[ {"type": "var", "name": "ENV"}
, { "type": "singleton_map"
, "key": "PATH"
, "value":
{ "type": "join"
, "separator": ":"
, "$1":
{ "type": "++"
, "$1":
[ {"type": "CALL_EXPRESSION", "name": "default-PATH"}
, { "type": "if"
, "cond": {"type": "var", "name": "ENV_PATH"}
, "then": [{"type": "var", "name": "ENV_PATH"}]
}
]
}
}
}
]
}
]
, [ "expand_exec.c"
, { "type": "singleton_map"
, "key": "expand_exec.c"
, "value":
{ "type": "BLOB"
, "data":
{ "type": "join"
, "separator": "\n"
, "$1":
[ "#include <stdlib.h>"
, "#include <string.h>"
, "#include <unistd.h>"
, ""
, "/* usage: ./expand_exec [VARS...] -- ARGS... */"
, "int main(int argc, const char *argv[]) {"
, " char** outv;"
, " const char** varv;"
, " int i, j, varc, sep = 0, retval = 0;"
, " for (i = 1; i < argc; ++i) if (strcmp(argv[i], \"--\") == 0) { sep=i; break; }"
, " varc = sep-1;"
, " argc -= sep+1;"
, " if (sep == 0 || argc < 1) return 1; /* error: missing sep or args */"
, " varv = &argv[1];"
, " argv = &argv[sep+1];"
, " outv = (char**)calloc((size_t)(argc+1), sizeof(char*));"
, " for (i = 0; i < argc; ++i) { /* iterate ARGS */"
, " const char* arg = argv[i];"
, " size_t arg_pos = 0, arg_len = strlen(arg);"
, " size_t out_pos = 0, out_len = arg_len;"
, " size_t str_pos = 0, str_len = 0;"
, " char* out = (char*)calloc((size_t)(out_len+1), sizeof(char));"
, " for (; arg_pos < arg_len; ++arg_pos) {"
, " if (strncmp(&arg[arg_pos], \"$(\", 2) == 0) {"
, " const char* start = &arg[arg_pos+2];"
, " const char* end = strchr(start, ')');"
, " if (end == NULL) {"
, " retval = 2; /* error: unterminated $(VAR) expression */"
, " free(out);"
, " goto cleanup;"
, " }"
, " for (j = 0; j < varc; ++j) { /* lookup VAR */"
, " const char* var = varv[j];"
, " size_t len_var = strlen(var);"
, " if ((size_t)(end - start) != len_var) continue;"
, " if (strncmp(&arg[arg_pos+2], var, len_var) == 0) {"
, " size_t val_len, out_len_new;"
, " const char* val = getenv(var);"
, " if (val == NULL) val = \"\";"
, " val_len = strlen(val);"
, " out_len_new = out_pos + str_len + val_len;"
, " if (out_len_new > out_len) {"
, " out = (char*)realloc(out, out_len_new+1);"
, " out_len = out_len_new;"
, " }"
, " strncat(out, &arg[str_pos], str_len); /* concat preceding substr */"
, " strncat(out, val, val_len); /* concat variable value */"
, " arg_pos += len_var + 2;"
, " out_pos += str_len + val_len;"
, " str_pos = arg_pos + 1;"
, " str_len = 0;"
, " break;"
, " }"
, " }"
, " if (j != varc) continue; /* success */"
, " }"
, " ++str_len;"
, " }"
, " if (str_len > 0) {"
, " if (out_pos + str_len > out_len) {"
, " out = (char*)realloc(out, out_pos + str_len + 1);"
, " }"
, " strncat(out, &arg[str_pos], str_len);"
, " }"
, " outv[i] = out;"
, " }"
, " execvp(outv[0], outv);"
, " retval = 3; /* error: exec failed */"
, "cleanup:"
, " for (i = 0; i < argc; ++i) if (outv[i] != NULL) free(outv[i]);"
, " free(outv);"
, " return retval;"
, "}"
]
}
}
}
]
]
, "body":
{ "type": "ACTION"
, "inputs":
{ "type": "map_union"
, "$1":
[ {"type": "var", "name": "TOOLCHAIN"}
, {"type": "var", "name": "expand_exec.c"}
]
}
, "cmd":
[{"type": "var", "name": "CC"}, "expand_exec.c", "-o", "expand_exec"]
, "outs": ["expand_exec"]
, "env": {"type": "var", "name": "ENV"}
}
}
}
}
|
